You're the best lecturer I've ever seen! Don't know how qualified to make the statement, but I went to public school in Midland, Michigan (very good schools), spent my senior year in high school at a private Catholic school, graduated from Hope College in Holland, Michigan (very good private college), attended a zillion seminars and workshops during my 20+ year career, and finally, I obtained my master's degree at Turku University in Finland, which included a semester at the Graduate School of Business in Marseilles, France and a semester at Tilburg University in The Netherlands. In all of these experiences, there were outstanding teachers, professors, and lecturers. Hands down, you're the best! Excellent visuals, very clear speaking voice with pertinent additional information, introducing a concept and then explaining it using examples, enough detail to make it worthwhile yet brief enough to allow the contents to sink in without causing mental overload. In closing, this video answered all my questions about grow lights. I'll read the article today and check out some more vids on your channel. THANK YOU and keep up the good work!!!
400 watt HPS puts out 55,000 lumens I don't believe you can get that out of 190 watts of LED If you want to see a great example of what you can grow under HPS check out HygroHybrid on you tube
I really appreciate and commend the fact that in the very start of the video you claim you're not an expert. Most You tubers, IMO, are just normal people with more or less info than the average (which isn't much sometimes) person. You keep it real and share what you have learned. Although this was a pretty basic overview, you were very clean in your approach and clear in your delivery of information you did share. Kudos. And on a side note, I wouldn't trust many LED manufacturers just yet as a lot of them aren't completely honest, or their tests aren't real world specific. I've seen a few tests that put a lot of LED fixtures on the market at, or just more or less than the average 600W to 1000W HPS in uMOL's per [whatever] (i don't remember everything). Though they do consume less energy overall. And I have yet to see an LED last as long as they claimed. 15-20 or 20-25 years is a bold statement for a product that has, to my eyes, not even made it this far. I've had CFL's and LED's in normal lighting with those same claims all burn out already, and haven't even been on the market as long, in some cases. Not to mention (I know it's newer tech, but...) the pricing on LED's is outrageous for something that costs just as much or less to manufacture than CFL's, in most cases. But then even HPS and CMH (along with everything else labeled as or for "growing") are marked up to take advantage of the new masses of people getting into the grow scene. I used to work in Electrical Wholesale. Just my observations and opinions.
Thanks for the kind words. And yes, you're right about the LED market. I need to dive deeper into the tech behind it, especially as its getting better over teh last few years. More to come!
If you want a LED to last long enough, you'd have to have a perfect circuitry unlike the incandescent bulbs which last for years because it is simple but inefficient which makes me think again about the technology we have in our hands today...
I wish you were not so far away. I have been propagating corals for the last decade and now I am getting into growning my own organic foods. This channel is hands down the best one, IMO. If you were closer to me I would love to be your apprentice. I am much better at hands on learning then reading. Regardless, your information in invaluable. Thank you Kevin. I have recently purchased a spider farmer sf-2000 based off the information you have given in a few videos! These should grow mr.stripy tomatoes with ease. Plus it's dimmable!
As this was 3 years ago, I'm sure you're far too big these days to be responding to every single comment. However, can I just say a huge thank you, this was precisely what I was looking for when I searched "different grow light types", but I wasn't expecting to get that from you. I actually watch your gardening vids religiously and while I'm here, loved your collaboration recently with my fellow countrymen Charles Dowding, keep up the great work my man 💪
Hello Epic Gardening, I really appreciate seeing both you and the text and I appreciate the subject, I am successfully growing orchids and succulents under HO t5 fluorescent tubes and LEDs. I am still looking for more information on this subject. Thanks for sharing this interesting video.
Very nice video. My goal is to propagate my herbs all winter in Michigan & start my flowers from seeds so they’re ready to be planted after the last frost. Do you have a LED light you recommend? Just spent the last 6 hours researching and my head is swimming with facts but no precise decision. Also want to keep my mandevilla vines still alive inside all winter. Thank you for your help!
Thank you for your clear and thoughtful presentation on types of grow lights. I am only a beginner houseplant grower, in a condo with northeast sunlight. I would like to grow plants, not for their flowers, but their foliage. Because they will be in my living room, I want to find attractive grow lights that I can hang from the ceiling or use in a stand and ones that don't scream, "I'm a growlight!" Can you make a recommendation? Thank you so much.
Another awesome video! Any advice on a good basic grow light to hang above my window plants for the winter? Its ferns, anthuriums, pothos and succulents? I was thinking a florescent tube just to add some extra light without overdoing it for these.
Great video--explained a lot. I might be wrong, but in your calculator you are asking for cents, but you really mean dollars, and because of this the calculations are off by a factor of 100. For example, in my area, a kWh is 33c ($0.33). If I enter in 33, as prompted by the calculator, it tells me that the yearly running cost of a 250w HPS is $36,135. Or is it just that running a single light bulb for a year can cost the price of an affordable car?
As soon as you said it bluntly, “this is your fake sun”, I know I can trust you even more. And why? Dear sir, your reference points for memory are wonderful! 😂
Kevin do you have any formal gardening background (e.g. horticulture, botany, etc.)? You seem to know your stuff really well, and I'm just wondering whether that's purely information you've acquired through experience & self-learning.
Hello! I'm trying to figure out a good lighting system for my indoor plants. My plants are in my classroom on shelves and we have zero windows. I can leave lights on when I'm there (7am-3pm or 7am-6pm) and take them home during breaks. But I'm not sure what sort of light system will help my plants thrive. Mostly succulents and low effort plants like spider plants, snake plants, etc. Thanks for your help in advance!
Six years on and one of your opening points, about LED lights and exaggerated claim, is still true. That's why I'm sticking to fluorescent for the babies and MH/HPS for the big girls.
hi. do u have a video on grow light for inddor plants? well, most of the growlights are actually for growing vegetables and flowers. But, how about for regular houseplants with no flower? do u think it's worth it investing on expensive full spectrum GL? thank you for your reply
I have two tents with T-5's running. Growing Basil. Just started babies from the mother plant. Was looking all over last night about Light distance from the plant. Great Video. T-5's? Distance from plant. Peace. Non flowering light.
With a T5 and basil you can get away with 5-6" away for most T5 setups unless they are putting out a TON of intensity. Try 6" and see how the plant responds :)
kevin hi. what is the minimum wattage equivelent for an indoor houseplant, ie: a lemontree start? i bought a 24watt led grow bulb on Amazon for supplimental lighting. Did I waste my money buying this? which is better, a shop light at 4,000Kelvin or a full spectrum grid light to grow indoors until summer? I live in zone 5b so it won't be warmuntil may.
Had this doubt and didn't really know what video to put in so: When it comes to light diffusion, is it good or reduces the effect on our plants? I've been reading lots of articles saying it's beneficial but at the same time, as a filmmaker, by difusing the light you're reducing its intensity so... I just wanna know if I have to sacrifice mood in my room by taking diffusion off of my lights, basically.
Thank you for sharing. 😎🇨🇦. I use 9W 1100K LED bulbs that I can source from Canadian Tire. Obviously not the best but two of them really seem to make a difference. Any ideas where I can source a higher watt bulb.
Ow! 11,000K!, 4000K-5000K is optimal for the vegetative stage(6000K even), while for flowering around 3000K-3500K(3500K great all around). Strange with nm's vs how many "K"(Kelvin, actually in degrees of temperature(?), Kelvin refers to the color of light, at a certain temperature, that tungsten steel, when heated to 3500°Kelvin, the tungsten steel burns at this color. Very interesting, but confusing with nm's, lol! I use a 630W CMH-DE for ultimate spectrum! Was going to upgrade to a 1000W DE-CMH, but were mostly 220-240V, then thought of supplementing my 630W DE-CMH(in a 5'x5' Gorilla tent) around the edges, where light levels were lower, with 4-100w COB units(2-50W COB's per 1M rail that slide either ways, as well as extremely adjustable angles for COB's(180°), and can turn 350° around, so very omnidirectional! First saw "Migro Lights" on RUclips videos. Similar, but much higher quality, ctaftsmanship, honesty. Tests his own against any, and not always the winner! Great guy/and Channel. Was going to purchase Migro(tops!but would have cost me more, and while awaiting Disability back pay, I ended up with a few grand less than expected. So, I went on Alibaba, found the 100W units for $117(cheaper now, I believe(maybe $75). I got the Citizen, about $80 cheaper than with the Cree CXB-3590's, per unit, very similar spectrum, and great reviews! Came to $480, plus $160(for overnight/2 day express, DHL delivery)! I see they have 50% off express delivery now! I may have to order another unit for my 32"x32" tent. The 1M rail fits perfectly if diagonal! Had to try. More than enough watts to fill that space with large, fast veg growth! So maybe a 4K for veg.. Some great deals on Alibaba! I believe Ceres was the company name? Omnidirectional are only available through them, or the High quality/top craftsmanship of Migro! Plus I don't believe in LED's only, yet, and so HID(CMH) puts out important features missed by many recreationall users, but some medicinal users! Hope you got a great lighting system! If not, hopefully very soon! Many great grows to you!
No, you can't use any LED as some are not suitable or powerful enough for plant growth. Here's my current best choices for LEDs: www.epicgardening.com/best-full-spectrum-led-grow-lights/
Rule of thumb: Close as possible without burning. If it's 13w, literally as close as possible while covering the plant because it's quite a low wattage
I used to use old basement fluorescent lights to start seeds. I just need to know a cheap alternative for seeds. This is all way too much info. I guess I’ll just use what I got (led) and see how they do. In addition to failure, the second main reason growers quit is complication.
Is 8900 Lumens @ 6500K good enough to grow out lettuce and kale when spread out over 4 to 6 square feet? I just bought some GE 4' long T8 LED bulbs that are rated to 2300 Lumens each. Got a 10pk at Lowe's for $74 plus tax. I will be putting them on a pulley system and will be keeping the light just off of the plants as they grow.
one LED grow light on Amazon said that it's bulb only had about 500 hours of life. that's 50 days of ten hour growing days. Also, you have to buy the replacement bulbs from their web site, and I was looking at the sites that replaced the bulbs, and none of them wanted to give the prices of the replacement bulbs. It might be cheaper, like inkjet printers, to just buy the whole lighting system again at $20 than to buy the replacement bulbs.
i have several xenon lights for automotive use, but I'm highly contemplating putting them to use. U think this is a good idea or perhaps it's too much? We're talking 12VDC and each pair of bulbs with ballast draw about 5amps. if i increase the voltage and keep the current low by keeping them at a good temperature I'd wager we're taking 4500k color and easily 2000 lumens.. Lights cost be nothing and it beats the hell outta this terrible halogen setup I'm working with presently. They're terrible. so much waisted energy , i could easily cook dinner from the heat wasted
Please, how close would you place a 12000 lumen, 4 ft, T8 LED tube fixture with four Greentek 18W clear LED tubes above vegetable seedlings? I know you said lumens are not best measurement of intensity. Here is link to the LED kit so you can see the unit if needed - their example photo looks pretty far away to me, farther than the 7-8" the assembly sheet recommends: parkseed.com/juniper-bonsai-in-cream-ceramic-container/p/27020/
I have a reason that wasn’t on the list! I want to put an ornamental plant in a corner that doesn’t get enough natural window light. I just want something that looks good.
The thing you are referring to as "Intensity" is more commonly referred to as Lumens. The higher the lumens, the more intense the light. It's the unit of measurement for the brightness of a light.
Lumens is the measurement of light as perceived brightness by the human eye. If you want to know what is brightness to a plant, you have to use the PAR value and then take a light meter to get an actual measurement after you install the light. Quite frankly, I think it should be against the law to state lumens on a plant light without also stating what the PAR value is. It's nice to have both, but lumens alone for a plant light is somewhat misleading.
Might just watch the vid in blocks, n just stop watching when you feel you arnt absorbing info and start the vid again later, it's hard to find a light vid that isn't just as detailed and complicated
You are very confusing. Wattage is used to calculate electricity usage/cost. Light intensity is measured in lumens. Also most bulbs will describe their 'colour' in kelvin units
I bought me a 75 watt L.E.D purple light. From Wal-Mart and it claims to give the correct color spectrum light for vegitation stage and flowering stage. I started of with. 3 cfl but ended making. Up the switch. Has anyone or anybody. Know if the claims are true. Compared to the professional L.E.D lights
No possible way a 190 watt led will put out as much light as a 400 watt MH or HPS in fact a 315 watt CMH will blow the LED out of the water. Your little LED is only going to cover a tiny little footprint like you might be able to veg in a 2x2 tent, with a 315 watt CMH I can veg in a 4x4 tent if I use a parabolic or a bat wing with a diffuser and I can bud with a 400 watt HPS thats four times the footprint so I fail to see LEDs being more economical unless you grow in a shoebox. I really have nothing against LEDs but you will never convince me that you can replace 400watts of hid with 190 or even 290 watts of LEDs
You're the best lecturer I've ever seen! Don't know how qualified to make the statement, but I went to public school in Midland, Michigan (very good schools), spent my senior year in high school at a private Catholic school, graduated from Hope College in Holland, Michigan (very good private college), attended a zillion seminars and workshops during my 20+ year career, and finally, I obtained my master's degree at Turku University in Finland, which included a semester at the Graduate School of Business in Marseilles, France and a semester at Tilburg University in The Netherlands. In all of these experiences, there were outstanding teachers, professors, and lecturers.
Hands down, you're the best! Excellent visuals, very clear speaking voice with pertinent additional information, introducing a concept and then explaining it using examples, enough detail to make it worthwhile yet brief enough to allow the contents to sink in without causing mental overload.
In closing, this video answered all my questions about grow lights. I'll read the article today and check out some more vids on your channel. THANK YOU and keep up the good work!!!
Lumens is how to quantify. Wattage is power. So a 450w hid can produce the same amount of light as a 150w led.
400 watt HPS puts out 55,000 lumens I don't believe you can get that out of 190 watts of LED
If you want to see a great example of what you can grow under HPS check out HygroHybrid on you tube
I really appreciate and commend the fact that in the very start of the video you claim you're not an expert. Most You tubers, IMO, are just normal people with more or less info than the average (which isn't much sometimes) person. You keep it real and share what you have learned. Although this was a pretty basic overview, you were very clean in your approach and clear in your delivery of information you did share. Kudos.
And on a side note, I wouldn't trust many LED manufacturers just yet as a lot of them aren't completely honest, or their tests aren't real world specific. I've seen a few tests that put a lot of LED fixtures on the market at, or just more or less than the average 600W to 1000W HPS in uMOL's per [whatever] (i don't remember everything). Though they do consume less energy overall. And I have yet to see an LED last as long as they claimed. 15-20 or 20-25 years is a bold statement for a product that has, to my eyes, not even made it this far. I've had CFL's and LED's in normal lighting with those same claims all burn out already, and haven't even been on the market as long, in some cases. Not to mention (I know it's newer tech, but...) the pricing on LED's is outrageous for something that costs just as much or less to manufacture than CFL's, in most cases. But then even HPS and CMH (along with everything else labeled as or for "growing") are marked up to take advantage of the new masses of people getting into the grow scene. I used to work in Electrical Wholesale. Just my observations and opinions.
Thanks for the kind words. And yes, you're right about the LED market. I need to dive deeper into the tech behind it, especially as its getting better over teh last few years. More to come!
If you want a LED to last long enough, you'd have to have a perfect circuitry unlike the incandescent bulbs which last for years because it is simple but inefficient which makes me think again about the technology we have in our hands today...
I wish you were not so far away. I have been propagating corals for the last decade and now I am getting into growning my own organic foods. This channel is hands down the best one, IMO. If you were closer to me I would love to be your apprentice. I am much better at hands on learning then reading. Regardless, your information in invaluable. Thank you Kevin.
I have recently purchased a spider farmer sf-2000 based off the information you have given in a few videos! These should grow mr.stripy tomatoes with ease. Plus it's dimmable!
That's a meet way to grow plants indoors with the h I d lamps Sunday I'll be building grow lamps such as metal halide HPS and much more.
Thank you for this info .i now understand lighting category basics.perfect video for me
As this was 3 years ago, I'm sure you're far too big these days to be responding to every single comment. However, can I just say a huge thank you, this was precisely what I was looking for when I searched "different grow light types", but I wasn't expecting to get that from you. I actually watch your gardening vids religiously and while I'm here, loved your collaboration recently with my fellow countrymen Charles Dowding, keep up the great work my man 💪
Hello Epic Gardening, I really appreciate seeing both you and the text and I appreciate the subject, I am successfully growing orchids and succulents under HO t5 fluorescent tubes and LEDs. I am still looking for more information on this subject. Thanks for sharing this interesting video.
Perfect timing. We are getting ready to buy lights for our seed starts.
Nice, perfect time to get those seeds started, too. Good luck with it!
Very nice video. My goal is to propagate my herbs all winter in Michigan & start my flowers from seeds so they’re ready to be planted after the last frost. Do you have a LED light you recommend? Just spent the last 6 hours researching and my head is swimming with facts but no precise decision. Also want to keep my mandevilla vines still alive inside all winter. Thank you for your help!
Thank you for your clear and thoughtful presentation on types of grow lights. I am only a beginner houseplant grower, in a condo with northeast sunlight. I would like to grow plants, not for their flowers, but their foliage. Because they will be in my living room, I want to find attractive grow lights that I can hang from the ceiling or use in a stand and ones that don't scream, "I'm a growlight!" Can you make a recommendation? Thank you so much.
Another awesome video! Any advice on a good basic grow light to hang above my window plants for the winter? Its ferns, anthuriums, pothos and succulents? I was thinking a florescent tube just to add some extra light without overdoing it for these.
Nice video, I like the CMH myself. Plants liked it over the LED or the 400 metal halide.
CMH are SUPER efficient from a $ and PAR perspective
sounds good
Great info, as always. Big Up to the Kevin!
My DEG Library where I can learn. Gracias 🙏
I need advice on the lumens and lux in different led bulbs for use on a lemon tree .
Very helpful! Thanks.
Thanks for sharing.
I bout a 5500 lumen led shop light from Walmart for $32 a few months ago. My plants love it, so I'm gonna take it as a win haha
12 volt
Old comment, but how close are your plants to the lights?
How close r the lights to the plants
Is it appropriate to utilize grow lights for houseplants that I want to place in corners that essentially have no light source in my home?
That's one of the best use cases for them!
Great video--explained a lot. I might be wrong, but in your calculator you are asking for cents, but you really mean dollars, and because of this the calculations are off by a factor of 100. For example, in my area, a kWh is 33c ($0.33). If I enter in 33, as prompted by the calculator, it tells me that the yearly running cost of a 250w HPS is $36,135. Or is it just that running a single light bulb for a year can cost the price of an affordable car?
Great info.
Any thoughts on mounting a 55” plasma tv face down over a grow?
This only works if you change the display to "Natural"
As soon as you said it bluntly, “this is your fake sun”, I know I can trust you even more. And why? Dear sir, your reference points for memory are wonderful! 😂
Kevin do you have any formal gardening background (e.g. horticulture, botany, etc.)? You seem to know your stuff really well, and I'm just wondering whether that's purely information you've acquired through experience & self-learning.
What about succulents? Requiring more light than heat to maintain their great coloring so they don't etiolate.?
What should be the distance between the florescent tube tight and the plant???
Plants like sansevierias, syngonium and ZZ???
What is the best brand of CFL for weed ?
Hello! I'm trying to figure out a good lighting system for my indoor plants. My plants are in my classroom on shelves and we have zero windows. I can leave lights on when I'm there (7am-3pm or 7am-6pm) and take them home during breaks. But I'm not sure what sort of light system will help my plants thrive. Mostly succulents and low effort plants like spider plants, snake plants, etc. Thanks for your help in advance!
I just bought my first grow light (led) a few days ago. It 100% helped my seeds become stronger and less leggy. It’s a must for any serious gardener.
thank you so much! this is all new. please keep them coming. l wold like to know what is in your book.
its been 4 years... you ever gonna update the sections of the article that say more info coming soon?
Excellent
Six years on and one of your opening points, about LED lights and exaggerated claim, is still true. That's why I'm sticking to fluorescent for the babies and MH/HPS for the big girls.
Excellent Video - thanks!
hi. do u have a video on grow light for inddor plants? well, most of the growlights are actually for growing vegetables and flowers. But, how about for regular houseplants with no flower? do u think it's worth it investing on expensive full spectrum GL? thank you for your reply
I have two tents with T-5's running. Growing Basil. Just started babies from the mother plant. Was looking all over last night about Light distance from the plant. Great Video. T-5's? Distance from plant. Peace. Non flowering light.
With a T5 and basil you can get away with 5-6" away for most T5 setups unless they are putting out a TON of intensity. Try 6" and see how the plant responds :)
Can I grow under normal led light. Waiting for your answer. Thank you.
Is there any book related to growlight... Design.
kevin hi. what is the minimum wattage equivelent for an indoor houseplant, ie: a lemontree start? i bought a 24watt led grow bulb on Amazon for supplimental lighting. Did I waste my money buying this? which is better, a shop light at 4,000Kelvin or a full spectrum grid light to grow indoors until summer? I live in zone 5b so it won't be warmuntil may.
Had this doubt and didn't really know what video to put in so:
When it comes to light diffusion, is it good or reduces the effect on our plants?
I've been reading lots of articles saying it's beneficial but at the same time, as a filmmaker, by difusing the light you're reducing its intensity so...
I just wanna know if I have to sacrifice mood in my room by taking diffusion off of my lights, basically.
Would an UVB light 5.0 work?
Fantastic video, thank you for all the information
+bobvise7 you're welcome Bob!
Hey , what's cool topic , I have bought an led grow light, the light spectrum is perfectly tailored
Nice! I hope you have great success growing with it :)
Thank you for sharing. 😎🇨🇦. I use 9W 1100K LED bulbs that I can source from Canadian Tire. Obviously not the best but two of them really seem to make a difference. Any ideas where I can source a higher watt bulb.
Ow! 11,000K!, 4000K-5000K is optimal for the vegetative stage(6000K even), while for flowering around 3000K-3500K(3500K great all around). Strange with nm's vs how many "K"(Kelvin, actually in degrees of temperature(?), Kelvin refers to the color of light, at a certain temperature, that tungsten steel, when heated to 3500°Kelvin, the tungsten steel burns at this color. Very interesting, but confusing with nm's, lol! I use a 630W CMH-DE for ultimate spectrum! Was going to upgrade to a 1000W DE-CMH, but were mostly 220-240V, then thought of supplementing my 630W DE-CMH(in a 5'x5' Gorilla tent) around the edges, where light levels were lower, with 4-100w COB units(2-50W COB's per 1M rail that slide either ways, as well as extremely adjustable angles for COB's(180°), and can turn 350° around, so very omnidirectional! First saw "Migro Lights" on RUclips videos. Similar, but much higher quality, ctaftsmanship, honesty. Tests his own against any, and not always the winner! Great guy/and Channel. Was going to purchase Migro(tops!but would have cost me more, and while awaiting Disability back pay, I ended up with a few grand less than expected. So, I went on Alibaba, found the 100W units for $117(cheaper now, I believe(maybe $75). I got the Citizen, about $80 cheaper than with the Cree CXB-3590's, per unit, very similar spectrum, and great reviews! Came to $480, plus $160(for overnight/2 day express, DHL delivery)! I see they have 50% off express delivery now! I may have to order another unit for my 32"x32" tent. The 1M rail fits perfectly if diagonal! Had to try. More than enough watts to fill that space with large, fast veg growth! So maybe a 4K for veg.. Some great deals on Alibaba! I believe Ceres was the company name? Omnidirectional are only available through them, or the High quality/top craftsmanship of Migro! Plus I don't believe in LED's only, yet, and so HID(CMH) puts out important features missed by many recreationall users, but some medicinal users! Hope you got a great lighting system! If not, hopefully very soon! Many great grows to you!
If you're asked 'What is you kwh in cents?' Aren't you supposed to enter '5'? Instead of '0.05' if it's 5 cents. They already said 'in cents'.
Can you tell me if you can use any led because i work making sign and can get them almost cost would really help thanks
No, you can't use any LED as some are not suitable or powerful enough for plant growth. Here's my current best choices for LEDs: www.epicgardening.com/best-full-spectrum-led-grow-lights/
You mentioned moving lights away and getting less light to the plants. en.wikipedia.org/wiki/Scheimpflug_principle could be useful when setting up.
Hi there! I have a 13w 6700k lamp, how close to the lamp does the plant need to be? What’s too close, what’s too far??
Rule of thumb: Close as possible without burning. If it's 13w, literally as close as possible while covering the plant because it's quite a low wattage
Epic Gardening thank you so much for the reply!! I have it about 8” away from my Hoya and the same for my vSOH. Is that too close, or too far away?
thank you!
I used to use old basement fluorescent lights to start seeds. I just need to know a cheap alternative for seeds. This is all way too much info. I guess I’ll just use what I got (led) and see how they do. In addition to failure, the second main reason growers quit is complication.
Is 8900 Lumens @ 6500K good enough to grow out lettuce and kale when spread out over 4 to 6 square feet?
I just bought some GE 4' long T8 LED bulbs that are rated to 2300 Lumens each. Got a 10pk at Lowe's for $74 plus tax.
I will be putting them on a pulley system and will be keeping the light just off of the plants as they grow.
Check my recent video on evaluating an LED grow light for why lumens are not the best metric to use to measure grow light efficiency!
@@epicgardening
I shall do. Thank you. Excellent vid BTW.
So far, my experience with the GE lights is that they aren't sufficient for anything at all. You want > 1000 PAR @ 12 inches.
one LED grow light on Amazon said that it's bulb only had about 500 hours of life. that's 50 days of ten hour growing days. Also, you have to buy the replacement bulbs from their web site, and I was looking at the sites that replaced the bulbs, and none of them wanted to give the prices of the replacement bulbs. It might be cheaper, like inkjet printers, to just buy the whole lighting system again at $20 than to buy the replacement bulbs.
500 hours of life is TRASH for a bulb so I simply wouldn't buy anything that company made
i have several xenon lights for automotive use, but I'm highly contemplating putting them to use. U think this is a good idea or perhaps it's too much? We're talking 12VDC and each pair of bulbs with ballast draw about 5amps. if i increase the voltage and keep the current low by keeping them at a good temperature I'd wager we're taking 4500k color and easily 2000 lumens.. Lights cost be nothing and it beats the hell outta this terrible halogen setup I'm working with presently. They're terrible. so much waisted energy , i could easily cook dinner from the heat wasted
Please, how close would you place a 12000 lumen, 4 ft, T8 LED tube fixture with four Greentek 18W clear LED tubes above vegetable seedlings? I know you said lumens are not best measurement of intensity. Here is link to the LED kit so you can see the unit if needed - their example photo looks pretty far away to me, farther than the 7-8" the assembly sheet recommends: parkseed.com/juniper-bonsai-in-cream-ceramic-container/p/27020/
I have a reason that wasn’t on the list! I want to put an ornamental plant in a corner that doesn’t get enough natural window light. I just want something that looks good.
Get the new mygrow led
Nice....
The thing you are referring to as "Intensity" is more commonly referred to as Lumens. The higher the lumens, the more intense the light. It's the unit of measurement for the brightness of a light.
Lumens is the measurement of light as perceived brightness by the human eye. If you want to know what is brightness to a plant, you have to use the PAR value and then take a light meter to get an actual measurement after you install the light. Quite frankly, I think it should be against the law to state lumens on a plant light without also stating what the PAR value is. It's nice to have both, but lumens alone for a plant light is somewhat misleading.
i have a learning disability, and this stuff is really rocking me. is there a simpler and shorter video?
Might just watch the vid in blocks, n just stop watching when you feel you arnt absorbing info and start the vid again later, it's hard to find a light vid that isn't just as detailed and complicated
@@EthanWinter- I’ve trying watching it multiple times.
Green is now considered very useful and even important to plants with multilevels of leaves. Unusefulness of green is now considered old myth
You're correct!
CMH , expensive bulbs, but closest to sunlight, no brainer.
Hey boss, hello from Houston TX USA, I'm a beginner at growing marijuana, what type of light would be good/great for it???
You are very confusing. Wattage is used to calculate electricity usage/cost. Light intensity is measured in lumens. Also most bulbs will describe their 'colour' in kelvin units
5 cent kw/h??? 😨
Where do you live?
In Germany 32 - 58cent
😃😃
There's new lights from 3 years ago
Do do you really respond to every comment?
I bought me a 75 watt L.E.D purple light. From Wal-Mart and it claims to give the correct color spectrum light for vegitation stage and flowering stage. I started of with. 3 cfl but ended making. Up the switch. Has anyone or anybody. Know if the claims are true. Compared to the professional L.E.D lights
No possible way a 190 watt led will put out as much light as a 400 watt MH or HPS in fact a 315 watt CMH will blow the LED out of the water. Your little LED is only going to cover a tiny little footprint like you might be able to veg in a 2x2 tent, with a 315 watt CMH I can veg in a 4x4 tent if I use a parabolic or a bat wing with a diffuser and I can bud with a 400 watt HPS thats four times the footprint so I fail to see LEDs being more economical unless you grow in a shoebox.
I really have nothing against LEDs but you will never convince me that you can replace 400watts of hid with 190 or even 290 watts of LEDs
I needed an explanation in *english* I really didn't understand :-( an you just tell me what to buy and what It's for?
Noice
Great information. Thanks!