Considering you grew lettuce which does NOT flower or produce fruit... its perfectly logical that it DOESNT need red light which is important for flowering and "fruiting"and not vegetation and most full spectrum leds have 60-70% of red led diodes... Just saying.. You should do some fruit grow actually ... If you did send a link
SRB NS to say that lettuce doesn’t need red light is false. All plants need red light. The ratio is what matters. ruclips.net/video/pgpjACVfLvA/видео.html
All leaves contain two types of chlorophyll, alpha and beta. One is activated by red light, the other by blue light. But there other biochemical roles for light. For example, plant can react to green light, avoiding that area, probably due to competition with other vegetation. Seeds respond to infrared.
@@rscott2247 Technically, it's not legal anywhere in the United States because it's still banned at the federal level. States do not have the authority to override a federal prohibition. So, when a state legalizes, what's really happening is that the state is saying they won't pursue it at the state level, but federal authorities still can and often do act even in those states. In Illinois, for example, it's been made legal but a guy across the street was operating a drug house and the police did this huge operation to shut him down, remove him, and board up his house. They had an actual tank right in front of my house. Scared me as it woke me up! The thing is there were so many complaints about all the other activity related to the marijuana that they pulled some strings and had federal agents come in and had him charged under federal rules. There are also public smoking bans in place for good reason, as many people are allergic and even those that aren't have a right to choose not to get high so public smoking bans are in place to make sure everyone can use the public place. Since ingestion is preferred for medicinal cases anyway the authorities do arrest people who violate public smoking bans regardless of what they are smoking. Additionally, any federally funded program has to follow federal rules, so college parking lots, federal highways, federal parks, etc.
There’s also the added benefit of enjoying your beautiful green plants under normal light rather than feeling like you’re stepping into a darkroom every time!
The reason why you got bitter taste of the R&B light is that under such condotions leafy vegetables tend to synthesize isotiocyanates in a higher degree. The enzyme called myrosinase which synthesizes isotiocyanets from glucosinolates is in that case not inhibited by the natural light and if there is predomenance of red and blue light. Overall thanks for the cool video!
I can't wait for part 2 this is an exciting video, thanks to your experiments I've been able to optimize my grow system , thanks for all your hard work Ryan!
Hello, thanks for the very nice video. How many days did it take for lettuce to grow with a white lamp? How many days did it take for lettuce to grow with a purple lamp?
I appreciate your concise but fact packed video! I've been experimenting with different lights for starting seedlings lately and your findings have been really helpful. Will be sure to check out more. Cheers!
Thank you for this test. I bought white light leds only because I don’t like working under colored light. It’s nice to know I haven’t had to sacrifice quality. LIKED 👍
Done something similar on my last grow,purely accidental.Started grow under mars hydro purple,friend gave me a white led spider farmer 5 weeks into grow.Results were beyond belief,best I ever had.This 50/50 mix seems best of all,just my take on things!
The red/blue lamps should be considered multi-spectrum and not full spectrum. White lamps are actually full spectrum. It would be interesting to see a comparison with fruiting/flowering plants and non fruiting/flowering plants under 2700K, 4000K, and 5000K LED lamps and compare the results. Nice hands on experiment, thanks.
Thank you! I have a new red/blue 200w(real) led and i couldnt figure out why my plants where doing so slow compared to some other 500w cfl (100w real) that i have...now i know that it will matter on the end product, after flowering.
the amount of watts drawn doesn't tell you how much brightness is there. Fluorescent can be 0.95 umol/w whereas the best LEDs are all 2.0 - 2.4 umol/w, literally twice as efficient. The problem is that generic LED can be much less efficient than 2.0 umol/w. Ideally, one should avoid LEDs with isolated bands of frequencies and just go for a broad spectrum light that's white from 3000 - 4000 kelvin.
There was more red light in the "white light" LED panel, which caused the leaf to become larger... however, despite the size of the leat, the nutrients/phytochemicals produced in the leaves are pretty constant, so the "bitter" taste in the predominantly blue light was due to these flavors being concentrated into less biomass, but equally healthy leaf as the white-grown, which actually had more red light. The leaf morphology (size) was affected by the spectrum. The amounts of phytochemicals responsible for taste were not, and in probably equal amounts "per leaf", but not "per gram".
Great video short and sweet and answered exactly what I wanted to know, would love to see the same test on a flowing plant in the bloom stage to see if the results differ
I just germinated seeds in hours, put some pepper, tomato and broccoli seeds in a brown napkin yesterday. I've got them in soil two weeks and nothing yet but I'm ready. I put in paper towel to make sure viable and broccoli and peppers already popping tails...yay!!!
Seeds are so cheap it's pointless to pop them like they expensive cannabis seed, Toss 2-3 in each hole and cull the weak after they're a weekish old. You can put them in a shot glass filled with distilled water and 2-3 drops of hydrogen peroxide for 12-24 hours then pop them right into your medium. This way they'll have some protection from dampening off fungal infection and you can see how viable they are. Plus seeds will start to acclimate to the napkin and when you switch them to soil it can cause them to get nutrient burn, but if they're started in the soil after the soak it reduces these chances to almost zero. Good luck with the garden!
Thanks for growing answers!!! Nice to know someone of intelligence is doing some worth while research using these new types of artificial lighting. Thanks and keep up the good work/research. I look forward to watching more of your videos. Ps the time laps was an awsome way to show the difference between the two types of lighting!!!
I have used all sorts of lights, and always found that the 4000-5000k spectrums just flat out did better no matter what kind of light it was. Spectrum does make a small difference, but it's the intensity that makes the real difference.
谢谢你的分享！我使用红蓝LED灯种植出来的生菜也是味道很苦，和你的结果是一致的 Thanks for sharing! The lettuce that I planted with the red and blue LED lights is also very bitter and is consistent with your results.
My daughter's moving out and my grandson I'm using that room for one of them garden that you're working on now and I've got both kinds of lights and it will be a beginner for me so I'm just watching to see which one's the best so I hope it turns out good thank you for sharing your videos God bless
Thanx! I’m a neophyte trudging my way through the jungle of reviews and suggestions! My head is spinning! What I want is a good, not expensive lighting system to wintry my plants and start growing peppers from seeds!
@@topazpowell8561 Probably a joke where it's almost always cloudy on most days with less sunshine being up northern europe. Not the best place for plants that need a lot of sunlight.
The comparison with an Osram Phytofy RL panel programed to grow seeds then green leaves would have been great, to see if the extra cost is worth the extra production and quality. You just need the blue spectrum LEDs for green leaves, together with full spectrum white LEDs. It's not just the one or the other, the white and the blue/red/white LEDs. It depends on the vegetation stage, if you want to simulate dawn/sunset, etc. Now that we have both infrared and UV LEDs, I will be playing with these 2 in a very small ratio compared with the growing LEDs. Just like direct LED lighting hurt our eyes, I think I'll try with a translucent glass between the LEDs and the plants, just like there is atmosphere refraction on Earth, it may be why you experienced burns on some (very few) leaves.
I think it would have been important to dehydrate the plants and see their "true" weight. The non-green plant may have been more dense, and technically "larger" than the green one. Then burn the dehydrated mass to extract and weigh the various vitamins (copper, iron, potassium, etc) contained. The reason for the bad taste could have meant more nutrients were present.
@@kennethkline7702 If that was any scientists actual approach nothing would ever get done. What a clown. At this scale, for this purpose, this was a fine experiment. Just be glad he used more than one plant on each side, ya testicle.
I have used white light for years and mostly to start plants to set out in spring but bought red, blue, white unit two years ago to grow winter lettuce, it has worked well for me but I too believe the white gives a better result. I have one set up with a white 4 ', then a red, blue white mix in the middle, and another white and I switch trays around to account for discrepancy in light levels .
for all the ppl that will call me incorrect the white light is actually all colors of light combined so with the colored led you are actually limiting the radiation from that spectrum Visible light waves are the only electromagnetic waves we can see. We see these waves as the colors of the rainbow. Each color has a different wavelength. ... White light is actually made of all of the colors of the rainbow because it contains all wavelengths, and it is described as poly-chromatic light
Im gonna be using metal halides for my system for the simple reason that when I observed saltwater aquariums equipped with metal halid lights the color of the coral was superior than that of led this is just my opinion I've tried T5's when they came out and i wasn't impressed prolly better now but doesn't matter the halides were free
I wish I had found this video before setting up my grow tent. Good news is I picked mostly white lights, and relatively the same conditions. The red/blue lights I had were left over from last year trying to keep tropical plants alive through winter and were definitely lacking. The plants all lived... but barely. Good hopes for this winter!
Why does everyone refer to them as red or red/blue and not just purple... Golly! Anyways I'll say this, purple definitely doesn't do as well as white if you have to choose one... but in my experience the purples are absolutely excellent for cloning and for seedlings/early veg. Because they're already naturally a little "dimmed" 🤣
The higher percentage of blue light in your RB led is the reason of higher chlorophyll compared to the RGB led ;) and blue surpresses leave extension so the leaves were less elongated than RGB because of that, despite the same amount of red.
OMG excellent time lapse show of comparison of various led lights!! Awsome hydroponics set up wow. Simply amazing grow op for your leaf lettuce. I must pass this on to my brother. Thanks for posting and sharing. Sharing is caring!!
In the 1980s NASA released info on plants and the light spectrums they need. You basically gave lettuce more of all the vitamins it needed with blue 440-500nanometer spectrum light (left). Leafy greens do not need other spectrums of light.
This is a much better video format than your older videos. It's clear you're dedicated and improving! I've noticed the same bitter taste with plants grown under blurple. I'm putting together a 250w fixture of 150w warm white COB and 2 50w 'full spectrum' cobs from Lustreon - we'll see how she goes.
Sounds like it should work well. And thanks. Ive made videos long before RUclips existed actually. I used to spend ridiculous amounts of time on them, but those were mostly short films. After that I did various things with video and never really stuck with one thing. The reason my older videos were poor was because I got very put off by video making and became lazy about it. I tried to edit as little as possible and also tried to make the process less complicated (on my part). My focus became just getting the information out there without any good structure. Honestly I still don't really like making videos. It used to be a hobby about 16 years ago, but after a certain point it just felt like work with no pay off. But now I get paid so it's sort of like running my own business so I treat it as such. I would still do experiments and grow stuff even if I didn't film it though.
Robert Theref ur right in most cases, but coating a lens with a color doesn’t make a light change color, it merely filters out the other colors and you are left with a single color. It certainly changes the ratio from one color to the other, but doesn’t add any. in other words, you don’t make a white light “more” red by adding a color filter. You’d be better off adding a red light in addition to the white light.
I wish I had found this video when doing my research about these red/blue lights. They suckered me in hard and I wasted almost $200 on them. Thanks for doing the research so others don't have to.
I wouldnt have never imaginated (sorry for bad english btw) to be in the middle of a war between led colors...please, go on! haha OP, your video was really informative. Im trying to grow my own microgreens garden!
It all depends of the plant types. Lettuce is all leaf, no stem of wood which wood loves sun as in full spectrum.. If people want to choose which light specs of various videos, they have to keep in mind how different their plant is compared to subject in this video.
Really great video. Short, snappy and to the point. Wondering if you managed to do a cost analysis of electricity, seeds and potting compost per plant vs store bought lettuce.
Red light spectrum only applies if blossom is involved. You basacly have here summer(White light, more blue light) and red light(fall aproaching , causing plants to retreat chlorophyll and going into reproduce mode) it depends on the plant btw. White / blue light for growth and red light for blossom, easy as that.
It doesn't depend on the plant, the average mass in his experiment showed an average of less mass, which would logically mean less bud production as well.
I wish I found your channel a few weeks ago (bought some lights in a rush. Would have made different choices had I known what I'm learning from you). Love the channel, keep it up!
IMO: The red/blue color gives the lettuce enough light(just right spectrum they needed) so no need for them to grow their leaves more widely. On the other side, with the white light, the lettuce needs wider leaf to absorb more light they needed. Just like when you give them enough sunlight and not giving them enough sunlight.
Bro I have red blue grow light but I turn it off here these are my reasons 1 . Serious headache 😫 2. my eye sight loos they damaged .y eyes bad 3. Making fish really uncomfortable they just hide from light and few died. These lights were no good for my aquarium.
Hello, thank you for your interesting video! I am French, excuse me if my English is bad. do you think that lighting with "normal" 2700 K led bulbs found in supermarkets can be beneficial to indoor plants? thank you ! Sarah
It is my understanding that 6,500k is the best color temperature for growing. I was surprised that the white light used in this video did so well considering it is at a much cooler color temperature. I would be interested to see a comparison between a 6,500K white light vs the one you used in the video.
Nice. I would be interested to see what the 'dry mass' was of both types also. I was thinking that the white light plants may have more water content - perhaps larger or less compact cells and the bitter taste of the RGB plants may be as a result of this. Liked the experiment - well done.
Thanks for this video, now I know which one to choose. I was leaning towards the red/blue before. I'm glad I waited. I'll be buying white lights for my succulents.
Thats not an entirely fair comparison though because there is still more plant material under the white light. Since he didnt measure the nutrient content of the plants, we can only make assumptions(what you said is true about darker greens). If you're getting your lettuce this way, its unlikely that the limiting factor is how much you can eat, seeing as thats like 6 salads in a month there. Each individual plant in this experiment probably has about the same total nutrient value, with the blue red just having a higher density. If you are able to grow all of the vegetables you need though, and your ability to eat them is the limiting factor, then you definitely would want to optimize the plants to be as nutritive as possible. Either way, people growing and eating their own greens is only good at the end of the day, even if they arent packing the maximum amount of nutrition.
Get a quantum board. They're pricey but well worth it. Blue purple led's are no match to decent white led. White led in 3000k spectrum is perfect for all stages and will kick any other lights ass for efficiency and yield
Actually the most important would have been to have them tested to which one had more nutrient value. Visually speaking it appeared to me the white light plants looked much healthier to me.
I think I have the same white light you show here. For vegetable seedlings, what distance did you use? The instruction sheet says .5M - 1.5M. The light is a german product. Not much grow info.
White light or blueish spectrum is for vegetative growth. Find a light that does both. Start with white or stay white with leafy greens. Flowering plants need red, orange or purple (red+blue) to properly flower.
The biggest part of this experiment that I find most fascinating is the difference in task due to the lighting. I am interested in seeing the outcome of the next experiment and what plant you will be using.
I rooted azaleas under Red/Blue lights as well as white LED lights and R/B plants were stunted and the leaves very purple. Within 3 weeks of transplanting outside the purple leaves greened up. White light contains yellow and green wave lengths which although less useful to the plant, are still important.
Red light is part of white light. The ratio of red to blue is what matters. To put that into perspective, if you added green LED's to a RED/BLUE light, the light would appear white. The reason is that plants go into a type of dormancy when given too much of only a few different targeted wavelengths. Tuned spectrum lights can work better in certain situations and with certain types of plants, but that's the problem. One light that has a static ratio of target wavelengths cannot be expected to work as general purpose grow light. That's why white light is a fail-safe for the uneducated. There is no guessing with white light, it just works.
Robert Theref I’m aware. But this video is mainly about cheap amazon lights and second to that is spectrum. This video is not referring to all grow lights or every situation. Its merely a demonstration an observation.
@@TheMusicHeals.kjhjhhg I know that when I am growing lettuce for salad that trichrome production is the most important part. So I should make sure I optimize the lights for trichromes. On my lettuce.
actually, we are talking begonias in my case. Those tropical plants are expensive, and too beautiful and precious to let them die in cold winter months.
This video is an excellent example of not allowing an exception to define the rule. When it comes to leafy greens, consumers usually prefer them to be less bitter and growers usually prefer a larger leafy biomass. However as many commenters have already noted, the denser rosettes and dark green leaves of the lettuce under the red blue light are highly indicative of healthier plants. Plants do not grow to suit humans' purposes their nature is to grow as healthily as possible and reproduce under the given conditions. In this case under white light elongated leaves formed to absorb more of the usable light. As a result, the leaves contained more water and less nutrients. That being said, in regards to lettuce, this is often more sellable to humans for the purpose of consumption. Likely for the majority of consumable leafy greens with the exception of those grown specifically as bitter greens or to have a specific form like celery or romaine, this might be the best option. That being said, virtually any other form of vegetative growth where nutrient density, fruiting, and the overall plant health required to reach full productivity would more likely benefit from the tuned spectrum. It would be helpful to do a more thorough analysis of the leaves and to try this same experiment with vegetables that fruit or produce edible roots to see if these results hold.
If you didn’t already notice the age of this video and the fact that it’s part one of a series, I would suggest observing the results from the following videos and much of my videos that played into the future after this. Because that’s exactly what I’ve done over the years
First, thanks for making a video. Second I have always been under the assumption that white lights are for growing the plant up. Red/Blue are for the flowering or fruit bearing or 'budding' as it were. So both are needed, just at different times. For the beginning stage of the plants use the White light for 18 hours or so and grow the plant up. When your ready for flowers, buds, etc, switch to the Red/Blue and time 12 hours light 12 hours dark which puts the plant in 'produce' mode. Third, lettuce is a bad plant to choose as it doesnt bear any fruit or flowers. Try tomatoes in the future :)
I'm curious if flushing the plants would take away the bitter flavour. Like with weed smoking it without properly flushing causes the smoke to be harsh.
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Considering you grew lettuce which does NOT flower or produce fruit... its perfectly logical that it DOESNT need red light which is important for flowering and "fruiting"and not vegetation and most full spectrum leds have 60-70% of red led diodes... Just saying.. You should do some fruit grow actually ... If you did send a link
SRB NS to say that lettuce doesn’t need red light is false. All plants need red light. The ratio is what matters. ruclips.net/video/pgpjACVfLvA/видео.html
Growing Answers yeah needs little red but most blue
Actually lettuce absolutely flowers, you just want to harvest it before that :)
All leaves contain two types of chlorophyll, alpha and beta. One is activated by red light, the other by blue light. But there other biochemical roles for light. For example, plant can react to green light, avoiding that area, probably due to competition with other vegetation. Seeds respond to infrared.
Both chlorophyll A and B has peaks in both blue and red.
This video was about a million times more helpful than Google search was in finding a clear answer
you're still on Google
google is a chinese style censorship on everything.
@@AJ-rs3ub "google search"
And yeah, youtube is always better for complicated answers that dont need a simple yes or no
I would have to agree with you Franklin
you just solved my 1 year problem in 4min, really appreciated
"I didn't grow plants in this video, I grew answers" You better copyright that. Thanks, great information.
Bars...
Everything is always automatically copyrighted. You might meant to say "trademark it".
Answers about lights that should be tossed in the garbage. Far inferior to soft whites or florescent.
Two years later and this video was a million times more helpful than other videos and google searches thank you!
"I swear im just growing lettuce"
The weed just appeared out of nowhere
The devil's lettuce!😉
Hehehe 😁
Hey, I wouldn't mind growing a female pot plant and besides where I live its legal now.
@@rscott2247 Technically, it's not legal anywhere in the United States because it's still banned at the federal level. States do not have the authority to override a federal prohibition. So, when a state legalizes, what's really happening is that the state is saying they won't pursue it at the state level, but federal authorities still can and often do act even in those states.
In Illinois, for example, it's been made legal but a guy across the street was operating a drug house and the police did this huge operation to shut him down, remove him, and board up his house. They had an actual tank right in front of my house. Scared me as it woke me up! The thing is there were so many complaints about all the other activity related to the marijuana that they pulled some strings and had federal agents come in and had him charged under federal rules.
There are also public smoking bans in place for good reason, as many people are allergic and even those that aren't have a right to choose not to get high so public smoking bans are in place to make sure everyone can use the public place. Since ingestion is preferred for medicinal cases anyway the authorities do arrest people who violate public smoking bans regardless of what they are smoking.
Additionally, any federally funded program has to follow federal rules, so college parking lots, federal highways, federal parks, etc.
There’s also the added benefit of enjoying your beautiful green plants under normal light rather than feeling like you’re stepping into a darkroom every time!
I personally love the dark room feeling. Just sayin
You eat in your darkroom?😅
@@patrickkenney2259 Yeah me too
The reason why you got bitter taste of the R&B light is that under such condotions leafy vegetables tend to synthesize isotiocyanates in a higher degree. The enzyme called myrosinase which synthesizes isotiocyanets from glucosinolates is in that case not inhibited by the natural light and if there is predomenance of red and blue light. Overall thanks for the cool video!
toi tu n'étais au fond de la classe a côté du radiateur!!ou alors tu es copain avec narcisse!!humour de bas étages désolé!
Hahaha thanks! Excellent.
So is it a good thing to have the isotiocynate more?
@@osirusj275 if you want your lettuce to taste bitter then it would be good but for most people that is not good.
How about plants that you're not planning on eating? Is it a good thing?
This guy was not looking for answers to his questions but was giving only facts that presented.
Excellent presentation.
A+++++
I can't wait for part 2 this is an exciting video, thanks to your experiments I've been able to optimize my grow system , thanks for all your hard work Ryan!
Hello, thanks for the very nice video. How many days did it take for lettuce to grow with a white lamp? How many days did it take for lettuce to grow with a purple lamp?
You set my mind at ease regarding my choice of already purchased white lights. This was great thanks a bunch! 🤗🇨🇦
Brevity is the soul of wit. Great work. Thank you
I am so glad I saw this before unpacking my new red & blue lights!
I appreciate your concise but fact packed video! I've been experimenting with different lights for starting seedlings lately and your findings have been really helpful. Will be sure to check out more. Cheers!
Thank you for this test. I bought white light leds only because I don’t like working under colored light. It’s nice to know I haven’t had to sacrifice quality. LIKED 👍
Was it ever validated if the color LED produced more nutrient plants? This was at 2:30
Done something similar on my last grow,purely accidental.Started grow under mars hydro purple,friend gave me a white led spider farmer 5 weeks into grow.Results were beyond belief,best I ever had.This 50/50 mix seems best of all,just my take on things!
The white led is it cool white or warm white or will any white led work. I'm planting lettuce.
The red/blue lamps should be considered multi-spectrum and not full spectrum. White lamps are actually full spectrum. It would be interesting to see a comparison with fruiting/flowering plants and non fruiting/flowering plants under 2700K, 4000K, and 5000K LED lamps and compare the results. Nice hands on experiment, thanks.
Thank you! I have a new red/blue 200w(real) led and i couldnt figure out why my plants where doing so slow compared to some other 500w cfl (100w real) that i have...now i know that it will matter on the end product, after flowering.
the amount of watts drawn doesn't tell you how much brightness is there. Fluorescent can be 0.95 umol/w whereas the best LEDs are all 2.0 - 2.4 umol/w, literally twice as efficient. The problem is that generic LED can be much less efficient than 2.0 umol/w. Ideally, one should avoid LEDs with isolated bands of frequencies and just go for a broad spectrum light that's white from 3000 - 4000 kelvin.
Thank you sooooo much for this video. I am studying grow lights, in order to get a head start on my summer plants.
There was more red light in the "white light" LED panel, which caused the leaf to become larger... however, despite the size of the leat, the nutrients/phytochemicals produced in the leaves are pretty constant, so the "bitter" taste in the predominantly blue light was due to these flavors being concentrated into less biomass, but equally healthy leaf as the white-grown, which actually had more red light.
The leaf morphology (size) was affected by the spectrum. The amounts of phytochemicals responsible for taste were not, and in probably equal amounts "per leaf", but not "per gram".
Hello, how many days did it take for the lettuce to grow with the light bulbs? How many days with the white light bulb?
Great video short and sweet and answered exactly what I wanted to know, would love to see the same test on a flowing plant in the bloom stage to see if the results differ
ruclips.net/video/v0sDHZYjdKk/видео.html
I just germinated seeds in hours, put some pepper, tomato and broccoli seeds in a brown napkin yesterday. I've got them in soil two weeks and nothing yet but I'm ready. I put in paper towel to make sure viable and broccoli and peppers already popping tails...yay!!!
Seeds are so cheap it's pointless to pop them like they expensive cannabis seed, Toss 2-3 in each hole and cull the weak after they're a weekish old. You can put them in a shot glass filled with distilled water and 2-3 drops of hydrogen peroxide for 12-24 hours then pop them right into your medium. This way they'll have some protection from dampening off fungal infection and you can see how viable they are. Plus seeds will start to acclimate to the napkin and when you switch them to soil it can cause them to get nutrient burn, but if they're started in the soil after the soak it reduces these chances to almost zero. Good luck with the garden!
Thanks for growing answers!!! Nice to know someone of intelligence is doing some worth while research using these new types of artificial lighting. Thanks and keep up the good work/research. I look forward to watching more of your videos. Ps the time laps was an awsome way to show the difference between the two types of lighting!!!
I have used all sorts of lights, and always found that the 4000-5000k spectrums just flat out did better no matter what kind of light it was. Spectrum does make a small difference, but it's the intensity that makes the real difference.
谢谢你的分享！我使用红蓝LED灯种植出来的生菜也是味道很苦，和你的结果是一致的
Thanks for sharing! The lettuce that I planted with the red and blue LED lights is also very bitter and is consistent with your results.
I tried the red and blue light to my white and pink leaf Caladiums. I think that’s the reason they were going green. Thank you for this experiment
I wonder what if we give 10 hours of sunlight or white light and 5-6 hours of red blue light. can you please do a video on it.
My daughter's moving out and my grandson I'm using that room for one of them garden that you're working on now and I've got both kinds of lights and it will be a beginner for me so I'm just watching to see which one's the best so I hope it turns out good thank you for sharing your videos God bless
It's kinda scary to watch lettuce growing in timelapse...
you have a weird reaction. I like its way of growing.
I like it. It looks kinda cute. Happy growing plants!
It's not scary!
It seems fleshy and alive
What's scary about it?
Thanx! I’m a neophyte trudging my way through the jungle of reviews and suggestions! My head is spinning! What I want is a good, not expensive lighting system to wintry my plants and start growing peppers from seeds!
You have to use clones as a control. Any plant from seed will vary in size depending on the seeds growth potential.
"I didn't grow plants...I grew answers."....instant sub.
White is for vegetational growth
Reds and stuff are for flowering.
I'm growing my weed with the purple red light
@@albertoasia1368it will grow nicely with the blurple light ive grown my first plant with a cheap purple light and they got big and dense buds
@@reefermadness7155 it's good cause I had the whole set up for free. I didnt spend a penny. 💗💗💗
@@albertoasia1368 nice man good growing
still.. the ULTIMATE vids about growth comparison in the planets.
Sun : Am I a joke to you?
The sun is trash we’re I live in Ireland
@@danielaghedo9551 what does "trash" mean?
@@topazpowell8561 crap
@@topazpowell8561 Probably a joke where it's almost always cloudy on most days with less sunshine being up northern europe. Not the best place for plants that need a lot of sunlight.
@@lihlin9285 Thank you Lih Lin.
And of course you
"GREW ANSWERS "
Much appreciated !
The comparison with an Osram Phytofy RL panel programed to grow seeds then green leaves would have been great, to see if the extra cost is worth the extra production and quality.
You just need the blue spectrum LEDs for green leaves, together with full spectrum white LEDs. It's not just the one or the other, the white and the blue/red/white LEDs. It depends on the vegetation stage, if you want to simulate dawn/sunset, etc.
Now that we have both infrared and UV LEDs, I will be playing with these 2 in a very small ratio compared with the growing LEDs.
Just like direct LED lighting hurt our eyes, I think I'll try with a translucent glass between the LEDs and the plants, just like there is atmosphere refraction on Earth, it may be why you experienced burns on some (very few) leaves.
amazing introspective comment at the end "I didnt grow plants, I grew answers" top broseph style gg
I think it would have been important to dehydrate the plants and see their "true" weight. The non-green plant may have been more dense, and technically "larger" than the green one. Then burn the dehydrated mass to extract and weigh the various vitamins (copper, iron, potassium, etc) contained. The reason for the bad taste could have meant more nutrients were present.
He did say hobbyist. I did not see a university style laboratory in this but a nice comparison video on led lighting with lettuce.
@@lostcivility9849 do it right, or don't do it.
@@kennethkline7702 go on then kenneth, show us how its done
@@kennethkline7702 If that was any scientists actual approach nothing would ever get done. What a clown. At this scale, for this purpose, this was a fine experiment.
Just be glad he used more than one plant on each side, ya testicle.
I have used white light for years and mostly to start plants to set out in spring but bought red, blue, white unit two years ago to grow winter lettuce, it has worked well for me but I too believe the white gives a better result. I have one set up with a white 4 ', then a red, blue white mix in the middle, and another white and I switch trays around to account for discrepancy in light levels .
for all the ppl that will call me incorrect the white light is actually all colors of light combined so with the colored led you are actually limiting the radiation from that spectrum Visible light waves are the only electromagnetic waves we can see. We see these waves as the colors of the rainbow. Each color has a different wavelength. ... White light is actually made of all of the colors of the rainbow because it contains all wavelengths, and it is described as poly-chromatic light
Im gonna be using metal halides for my system for the simple reason that when I observed saltwater aquariums equipped with metal halid lights the color of the coral was superior than that of led this is just my opinion I've tried T5's when they came out and i wasn't impressed prolly better now but doesn't matter the halides were free
I wish I had found this video before setting up my grow tent. Good news is I picked mostly white lights, and relatively the same conditions. The red/blue lights I had were left over from last year trying to keep tropical plants alive through winter and were definitely lacking. The plants all lived... but barely. Good hopes for this winter!
Why does everyone refer to them as red or red/blue and not just purple... Golly! Anyways I'll say this, purple definitely doesn't do as well as white if you have to choose one... but in my experience the purples are absolutely excellent for cloning and for seedlings/early veg. Because they're already naturally a little "dimmed" 🤣
The higher percentage of blue light in your RB led is the reason of higher chlorophyll compared to the RGB led ;) and blue surpresses leave extension so the leaves were less elongated than RGB because of that, despite the same amount of red.
OMG excellent time lapse show of comparison of various led lights!! Awsome hydroponics set up wow. Simply amazing grow op for your leaf lettuce. I must pass this on to my brother. Thanks for posting and sharing. Sharing is caring!!
In the 1980s NASA released info on plants and the light spectrums they need. You basically gave lettuce more of all the vitamins it needed with blue 440-500nanometer spectrum light (left). Leafy greens do not need other spectrums of light.
And yet, white light clearly produced a better yield.
@@TheRanguna Yes, because it has more blue spectrum which is the only thing leafy greens use. Do you have reading problems?
@@9001greg Doesn't white and blue red have the same amount of blue ?
@@TheRanguna No...
@@9001greg Well, it probably depends on the bulb.
What temperature were the white lights? I wonder if 6500k would be too high for leafy greens.
depv around 3000k for white. Blurple has no temp.
This is a much better video format than your older videos. It's clear you're dedicated and improving! I've noticed the same bitter taste with plants grown under blurple.
I'm putting together a 250w fixture of 150w warm white COB and 2 50w 'full spectrum' cobs from Lustreon - we'll see how she goes.
Sounds like it should work well. And thanks. Ive made videos long before RUclips existed actually. I used to spend ridiculous amounts of time on them, but those were mostly short films. After that I did various things with video and never really stuck with one thing. The reason my older videos were poor was because I got very put off by video making and became lazy about it. I tried to edit as little as possible and also tried to make the process less complicated (on my part). My focus became just getting the information out there without any good structure. Honestly I still don't really like making videos. It used to be a hobby about 16 years ago, but after a certain point it just felt like work with no pay off. But now I get paid so it's sort of like running my own business so I treat it as such. I would still do experiments and grow stuff even if I didn't film it though.
Zachary Melo has nZSgy
Robert Theref ur right in most cases, but coating a lens with a color doesn’t make a light change color, it merely filters out the other colors and you are left with a single color. It certainly changes the ratio from one color to the other, but doesn’t add any. in other words, you don’t make a white light “more” red by adding a color filter. You’d be better off adding a red light in addition to the white light.
Robert Theref filtering the light will waste energy. The plant does the filtering through its pigments.
Useful video buddy, congratulations!
Thank you Ryan i been looking for really good information on Purple vs White lights Thank you soo much
I wish I had found this video when doing my research about these red/blue lights. They suckered me in hard and I wasted almost $200 on them.
Thanks for doing the research so others don't have to.
I wouldnt have never imaginated (sorry for bad english btw) to be in the middle of a war between led colors...please, go on! haha
OP, your video was really informative. Im trying to grow my own microgreens garden!
It all depends of the plant types. Lettuce is all leaf, no stem of wood which wood loves sun as in full spectrum.. If people want to choose which light specs of various videos, they have to keep in mind how different their plant is compared to subject in this video.
Really great video. Short, snappy and to the point.
Wondering if you managed to do a cost analysis of electricity, seeds and potting compost per plant vs store bought lettuce.
Red light spectrum only applies if blossom is involved. You basacly have here summer(White light, more blue light) and red light(fall aproaching , causing plants to retreat chlorophyll and going into reproduce mode) it depends on the plant btw. White / blue light for growth and red light for blossom, easy as that.
It doesn't depend on the plant, the average mass in his experiment showed an average of less mass, which would logically mean less bud production as well.
Really like this video. Great shots, contains all the info I hoped for and it's still compact. Pleasantly professional.
Thank you! This helped me make a critical and educated shopping decision.
I wish I found your channel a few weeks ago (bought some lights in a rush. Would have made different choices had I known what I'm learning from you). Love the channel, keep it up!
This channel has a very good potential bro. Nice contents.
IMO: The red/blue color gives the lettuce enough light(just right spectrum they needed) so no need for them to grow their leaves more widely. On the other side, with the white light, the lettuce needs wider leaf to absorb more light they needed. Just like when you give them enough sunlight and not giving them enough sunlight.
Bro I have red blue grow light but I turn it off here these are my reasons
1 . Serious headache 😫
2. my eye sight loos they damaged .y eyes bad
3. Making fish really uncomfortable they just hide from light and few died.
These lights were no good for my aquarium.
Hello, thank you for your interesting video! I am French, excuse me if my English is bad. do you think that lighting with "normal" 2700 K led bulbs found in supermarkets can be beneficial to indoor plants? thank you ! Sarah
You should mix 2700 K with daylight bulbs too. Or just use daylight 4000 K
@@GrowingAnswers thank you very much !! =)
It is my understanding that 6,500k is the best color temperature for growing. I was surprised that the white light used in this video did so well considering it is at a much cooler color temperature. I would be interested to see a comparison between a 6,500K white light vs the one you used in the video.
5 years later, the science has shifted, most grow lights are within the 3000k-5000k spectrum now.
Thanks for your video and keeping it short and to the point. Will keep watching your channel
Would b great to see a test run with both types of lights in the grow!
Red and blues never should have been offered main stream.
I love your channel. Great presentation.
Could you explain? Is it a safety issue? Is it a complexity thing?
Nice. I would be interested to see what the 'dry mass' was of both types also. I was thinking that the white light plants may have more water content - perhaps larger or less compact cells and the bitter taste of the RGB plants may be as a result of this. Liked the experiment - well done.
Thanks for this video, now I know which one to choose. I was leaning towards the red/blue before. I'm glad I waited. I'll be buying white lights for my succulents.
Great video man keep it up !!!
Definitely grew faster with the white light. Great to watch these videos to learn so many things.
Do this same test but with weed plants.
have we already legalized?
@@bebehasbebehas2287 does it matter?
Thanks for really shining a light on this topic.
Of course I found this after I bought a red blue light for my greens. As a novice I'm slightly discouraged. 😔
Melanie Stewart Dont be!!
Thats not an entirely fair comparison though because there is still more plant material under the white light. Since he didnt measure the nutrient content of the plants, we can only make assumptions(what you said is true about darker greens). If you're getting your lettuce this way, its unlikely that the limiting factor is how much you can eat, seeing as thats like 6 salads in a month there. Each individual plant in this experiment probably has about the same total nutrient value, with the blue red just having a higher density. If you are able to grow all of the vegetables you need though, and your ability to eat them is the limiting factor, then you definitely would want to optimize the plants to be as nutritive as possible. Either way, people growing and eating their own greens is only good at the end of the day, even if they arent packing the maximum amount of nutrition.
@Mike E defiantly lol🤣
Get a quantum board. They're pricey but well worth it. Blue purple led's are no match to decent white led. White led in 3000k spectrum is perfect for all stages and will kick any other lights ass for efficiency and yield
Melanie Stewart I’m a novice too! I also bought a R/B light for my herbs. They haven’t sprouted yet . But hoping it works!
I was hoping to apply this to growing some jazz cabbage.
Cool, awesome experiment. Now i know which light i choose for my aquaponic.
Actually the most important would have been to have them tested to which one had more nutrient value. Visually speaking it appeared to me the white light plants looked much healthier to me.
I watched a ton of videos trying to find the answers that you so easily summed up.
Thanks
How about mixing both lights in one grow?
Peter XYZ Better in white. 😊
the white Leds allready has red light in it
you have to look at par values, distance from plant at various stages, and spectrum, kelvin is also important
I know exactly why at least 40% of us are here lol
Nank Dug you grow tomatoes too?
good olde "veges”
RUclips recommended this. I can't even keep a potted cactus alive
a special type of lettuce
I think I have the same white light you show here. For vegetable seedlings, what distance did you use? The instruction sheet says .5M - 1.5M. The light is a german product. Not much grow info.
About 8 inches
"Hey babe, wanna eat lettuce with me on tape?"
they stopped using tape about 30 years ago. On video.
@@bebehasbebehas2287 don't be a salty dingus, it's a joke
White light or blueish spectrum is for vegetative growth. Find a light that does both. Start with white or stay white with leafy greens. Flowering plants need red, orange or purple (red+blue) to properly flower.
You grew this much lettuce in two weeks??? 😳 How.. That's insane.
Hydro is faster.
Hydro is less effort for the plant to send out roots to collect nutrients and water.
@I trigger people But it's pretty easy to keep conditions stable. Once you know the nutrients / light settings etc. shouldn't it be easy?
The biggest part of this experiment that I find most fascinating is the difference in task due to the lighting. I am interested in seeing the outcome of the next experiment and what plant you will be using.
for anything without a fruit or fruiting stage white light would be better. White for veg red and blue for fruit.
TheIrishraven14 wrong
@@themurraypeeps5795 how so? nice of you to say wrong but not say how :D
@@TheIrishraven14 you don't need other colors just double the wattage. You can flower with all fluorescent tubes!
I rooted azaleas under Red/Blue lights as well as white LED lights and R/B plants were stunted and the leaves very purple. Within 3 weeks of transplanting outside the purple leaves greened up. White light contains yellow and green wave lengths which although less useful to the plant, are still important.
Oh my baby. I heard red lights are better for flowering? lettuce no flower,that's the reason maybe?
Red light is part of white light. The ratio of red to blue is what matters. To put that into perspective, if you added green LED's to a RED/BLUE light, the light would appear white. The reason is that plants go into a type of dormancy when given too much of only a few different targeted wavelengths. Tuned spectrum lights can work better in certain situations and with certain types of plants, but that's the problem. One light that has a static ratio of target wavelengths cannot be expected to work as general purpose grow light. That's why white light is a fail-safe for the uneducated. There is no guessing with white light, it just works.
Robert Theref I’m aware. But this video is mainly about cheap amazon lights and second to that is spectrum. This video is not referring to all grow lights or every situation. Its merely a demonstration an observation.
@@TheMusicHeals.kjhjhhg I know that when I am growing lettuce for salad that trichrome production is the most important part. So I should make sure I optimize the lights for trichromes. On my lettuce.
@@toddschriver9924 trichomes on the lettuce.. lol .
True. It has mostly red so thats why it makes plant go green slower. Its a fact.
Hello what camera did you use to record the footage ? Thankyou sorry I read your description
Canon 70d.
"how to grow w..*Delete*....lettuce faster"
actually, we are talking begonias in my case. Those tropical plants are expensive, and too beautiful and precious to let them die in cold winter months.
@breezetix You used that meme wrong
This video is an excellent example of not allowing an exception to define the rule. When it comes to leafy greens, consumers usually prefer them to be less bitter and growers usually prefer a larger leafy biomass. However as many commenters have already noted, the denser rosettes and dark green leaves of the lettuce under the red blue light are highly indicative of healthier plants. Plants do not grow to suit humans' purposes their nature is to grow as healthily as possible and reproduce under the given conditions. In this case under white light elongated leaves formed to absorb more of the usable light. As a result, the leaves contained more water and less nutrients. That being said, in regards to lettuce, this is often more sellable to humans for the purpose of consumption. Likely for the majority of consumable leafy greens with the exception of those grown specifically as bitter greens or to have a specific form like celery or romaine, this might be the best option. That being said, virtually any other form of vegetative growth where nutrient density, fruiting, and the overall plant health required to reach full productivity would more likely benefit from the tuned spectrum. It would be helpful to do a more thorough analysis of the leaves and to try this same experiment with vegetables that fruit or produce edible roots to see if these results hold.
If you didn’t already notice the age of this video and the fact that it’s part one of a series, I would suggest observing the results from the following videos and much of my videos that played into the future after this. Because that’s exactly what I’ve done over the years
What are you growing 😂😂 I dream of having those lights I’ll grow so much weed
Devan Garcia u aint growin anything good with 100-200 PAR
First, thanks for making a video. Second I have always been under the assumption that white lights are for growing the plant up. Red/Blue are for the flowering or fruit bearing or 'budding' as it were. So both are needed, just at different times. For the beginning stage of the plants use the White light for 18 hours or so and grow the plant up. When your ready for flowers, buds, etc, switch to the Red/Blue and time 12 hours light 12 hours dark which puts the plant in 'produce' mode. Third, lettuce is a bad plant to choose as it doesnt bear any fruit or flowers. Try tomatoes in the future :)
Don Corbett already did all that. Look for that in my playlists
man do this with cannabis
Years of videos of that already.
Nice experiment and well presented!
I was totally bald and sat underneath a colour LED light for just a month and guess what I look like Bob Marley now !!!
So...you're still bald but a black African now? 😄
Great test! Thanks. White light is also nicer if you grow plants in your living space.
Who else is here thx to their random recommended?
I'm curious if flushing the plants would take away the bitter flavour. Like with weed smoking it without properly flushing causes the smoke to be harsh.
Thank you for making video like this. I wanna know what is the correct lux light from seeds to harvest? Im trying to grow a lettuce for indoor.