How to Mix a Hydroponic Stock Solution
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- Опубликовано: 2 окт 2024
- Hoocho shows us How to Mix a Hydroponic Stock Solution
Hoochos explores the worlds of Hydroponics, Aquaponics, Permaculture, Homesteading, Fermentation, Technology and DIY Builds to look at the world through a larger lens that can incorporate the best of everything into a rich and rewarding lifestyle.
Through self sufficiency we can reduce consumption and increase our hyperlocal household production.
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Happy Hydroponicing!
Creating the nutrient from scratch would be an awesome episode. Especially if you included expected shelf life or variations. That could even be a short series, if the viewers supported it.
soo interested in this. I imagine it'd be some sort of compost tea, urine, and eggshell mix but I can't seem to find much info on it
@@timboyer8783 It be just packets marked as B, Cu, N, Zn, Mo, Fe, etc. and work with miligrams. You potentially get 10x cheaper customisable to strain and stages solution minimising lost of water and materials. But you need to be at least a bit of chemist dto make it work at full potential have some tools and reagents to tests or use side lab. Organic is suboptimal.
This is ultimately what i'm after
ruclips.net/video/JoFVy1jfBN4/видео.htmlsi=sWW2lfJPXQWil5Qf
Great content.
Would really like to know the basic chemistry of the nutrients and their effects on different crops. Starting from scratch sounds interesting Hooch.
You need a plant phys 110 course for that, there should be a couple of MOOCs knocking about somewhere!
Absolutely would like to know how to make from scratch.
This really simplifies the grow process so I can be more consistent.
Was curious on why masterblend tells us to put calcium nitrate always last? Is it because of adding magnesium sulfite to the blend? Thank you again for sharing your labor of love with all of us!!
Takes a lot of time to study up on all the different nutrient products that are available. Be great to get to a test chart if one hasn't already been done to make comparisons. A table with data collected on the results of using various nutrients by manufacturer. I suppose water is a big factor too. Also, comparisons between dry nutrients and liquid nutrients. In addition, I am just now discovering the biostimulant market for hydroponics. Here in Japan a company I work with developed a bistimulant that causes roots to grow 20-30 percent larger resulting in the roots being able to pull in more nutrients for increased growth. A biostimulant linked to an optimal nutrient would be phenomenal growth.
An optimal nutrient profile would have to include the environment because environment plays a major role in nutrient uptake. Fwiw, uptake changes with temperature, light intensity and CO2 as well as growth stage. The type of growing method makes a big difference and if that wasnt enough, the daytime and night time elemental uptake is completely different.
@@atomizer2665 All of what you said is automated in commercial hydro in Holland. These guys are on another level. Even NO3/NH4 ratio based on temp hahaha...
Hey Hooch, You've been a true saviour mate!!
I've had a large urban garden for a few years and now I've been wanting to get into hydroponics.
Your video's have been a true miracle.
Your extensive knowledge is impressive to say the least.
Enough with the gushing, on with the question!!..lol
My plan is to start a quad tube grow tower, an NFT and Dutch Buckets.
I will be picking up a large 1000L reservoir that I plan to use to feed nutrient to all systems through a feed reservoirs with float valves.
I'll be growing a large variety of Veggies in all the systems.
Is there one general nutrient mix for all feedings (leafy greens and fruiting) or should I be mixing for specific plant types (requiring me to change the setup slightly) and use smaller fee reservoirs with different nutrient mixes more tailored to greens and fruiting types???
Don't know if that makes sense or not...
Cheers from Montreal!
Mario
Perfect video. Any ideas on the shelf life of the concentrate mix's? Stored in cool dark conditions, use within a month, 3, 6 or more?
Months and months no issues with previous part a and b .. from a hydroponics store
This video is a god sent. Thank you
Please make a video about how to make your own nutrients! I'm always questioning whether a nutrient brand has good quality nutrients, and I don't know how to find out what they use for their mixes, so I would love to have the ability to know exactly what I'm putting into my plants, and in what ratios. I love making stuff myself, I love hydroponics, which is how I manage to find my way to your channel, and I would love to see a way to DIY my own nutrients
I second this. Please make a video about making nutrient from scratch.
Scam alert on this thread hopefully Hoocho can get rid of this bot!!
Very useful, thank you! It would be very interesting to see if it's possible to do a hydroponics formula from scratch with organic matter
it's unlikely to work, keeping nutrients suspended in water so plants can absorb them is pretty advanced chemistry, i think (much easier when using soil). For a fact, i tried to use organic liquid fertilizer for hydroponics (growing in perlite), it never worked.
Hook up a paint mixer to a drill, costs you like AUD$5 and it'll be 10X faster. Best way to mix nutes, even in cold water. Also, is that a Xiaomi smart jug? :D
Looking forward to seeing your videos on making your own hydroponic nutrients
A oil filler funnel from a car would also work to pour the neutriant powder into barrel as they are quite large on the nozzle ( a new unused one obviously 🙄)
Coming up with my own nutrient solutions?
Yeah, man. I'm interested.
Thanks mate.
Any suggestions for folks that are just tinkering & don't want to buy the large bags to start out?
Bunnings sell the Manutec powdered which makes 600L (I think) and it’s about $13
But let me know how much you’re after and I’ll bring it when I come down next.
This is a very helpful video . Thanks dude
I really want to see the nutrients from scratch video .
Subscribing now !
Awesomeness simplified. Thanks a ton on this video. I would be interested in making things from scratch can you help please.
home made noots please, oh and LOL @ freedom units
i worked in the water industry for 15 years, i never found 2 x pH metres that ever read the same, so i dont use them, (hanna junk) i use the drops, if and when i bother to check pH (not the strips)
What about the pH of tap water? In the US, it's heavily chlorinated. Thanks
I would love to see future videos on making your own hydroponic nutrients. I've been growning with hydroponics for 15 years and I've discovered there are certain plants that will not fruit if you don't have the nutrients formula precisely dialed in. You can find in the scientific literature the exact ratios of nutrients, but you'll never see them on the shelf as almost all flower nutrients are designed for a very specific cash crop.
Yes please show from scratch nutrients.
Your looking really good glad your regaining your life balance.
Im doing it from scratch..hydrobuddy is usefull
Yara liva cacinit,yara krista k plus,yara vege/ tomato/or other. This include micro nuitrient..Ag brand also good.haifa also good..
Hi.. i have been following Dr Daniel Fernandes. Quite impressive with the technicals. I have been exploring on how to make nutrients from salts (scratch) contacted many but no one has shared things properly.
Till date hydro buddy seems most transparent in explanation simmilar to this place.
Please share your experiences
@@fuzzmc7079 hi... Need your help answer few queries on making stock solution from ecratch
So some sites are saying to add Calcium Nitrate last while others say to add it first.
Anyone know any links that proves which order is best?
are you using this formula for all of your plans?
Hello! Good videos! I have a question. Why my calcium participate when im mixing the reservoir? I know when air bubbleing takes out co2 from water so it raise ph, but every hydroponics need some kind of airstone in the reservoir, doesnt matter its a dwc or nft system. So my question is what the best practice when mixing nutrients? I wait 1 day with tap water to get stagnated, and i air bubbled it too. Than ph go up 8.0 . Than i add a bit of nitric acid 60%, to get ph down to 6.5. Than i add a solution A (npk 6,14,30+epsom salt) stock solution, than waiting for another day and bubbleing it. Than next day i add the calcium nitrate stock solution B, than add more nitric acid to make ph 6.0. Than suddenly ph starts to rise again and calcium participate, and make cloudy water. The water was on room temperature all the time, ec went up after mixing all nutes to 900ppm (what is good), so dont know what im doing wrong pls help. How to avoid this participated clody water. Thanks.
excellent information. I like seeing ways to do smaller scale as a beginner home gardener wanting to try hydroponics.
Ohhh, math! ➕➖⁉️🤨 So difficult to understand (and convert units). Great info but I’ll need to watch this video many more times.
Use metric measurements. It’s much easier.
New subscriber! Very informative video, you present so well! Thank you for sharing. Very interested in any info.
Would love to know how to make my own fertilizer and how to use the PH levels and what what to put in to make it go up and down. Thank you, love watching your videos.
9:36 some Jam funnels would probably work too
Thanks!!
Helo mate, ur content is very informative for me. May I know since when you dig this hydroponics as hobby? Cause in my view you have so much informative to watched out.
Thanks & have a nice day.
I just found this video. I am also VERY INTERESTED in how to make nutrients from scratch.
Hey Hochoo. I just bought a kg of each of the nutrients you state in this video. Any chance you have a record of your exact mixing quantities written down?
1kg will dissolve down to 4L of water.
So take the kilo, then add water till you have 4L
Rate of application is 4mL per L
So master blend and Epsom salts is part A and calcium nitrate is part B
Use a 20L bucket and a mixer drill attachment for stirring/dissolving and then pour into a wide mouth container or any container with a funnel :)
do you use tap water / distilled water / RO water ? Ive been using RO water for my Hydroponics and have dabbled with tap water but my tap water has a starting EC of 0.8 and of course i dont know the make up. Curious if youve had experience or input
Another great video. I am all new to this and todays project is to make the propagator & pucks! My local nutrient distributor does not stock the Special T and recommended the Dimond White as a alternative. The Dimond White has proportionally higher nitrogen. Do you think this would this be suitable? Any help appreciated.
Dimond Special T - 8.2% Nitrogen, 3.9% Phosphorus, 32.2% Potassium, 4.2% Sulphur, 1.7% Magnesium, 0.15% Iron, 0.075% Manganese, 0.028% Boron, 0.023% Zinc, 0.017% Copper, 0.011% Molybdenum
Dimond White - 15.2% Nitrogen, 2.5% Phosphorus, 25% Potassium, 1.9% Sulphur, 1.5% Magnesium, 0.04% Iron, 0.02% Manganese, 0.01% Boron, 0.020% Zinc, 0.011% Copper, 0.001% Molybdenum
I just realised that the A/B solution I have used is thr "Grow" version from the brand Shogun. I don't understand why there are so many brands supplying "Grow" & "Bloom". Is there a problem just using the Grow solution, or do I need to empty all my buckets to then top up and recalibrate with a Bloom solution? Please help.
Thanks so much for your valuable info. I also learnt about putting part B in before part A which I wasn't doing. I'm just starting out with hydroponic veggies and hope to get better as time goes on. Keep up the gr8 work. Will be tuning into your videos for more informative knowledge in the coming weeks Just a quick question. Do you add Epsom salts to your A solution ? like I do when using Miracle Gro UK
Great job! This video is fantastic! Content like this makes us want to sub!!
Anyone know the shelf life would be for this concentrate mix?
That was actualy 1300 ml and not 1500ml you can see it on the scale, your kettle has wrong measurements :D
yes, nutrients from scratch video , please
Great vid ty!
Can i do this with rain water (after ajusting Ph ofc) ?
would love to see a video on how to make hydroponic solution from scratch
How can I use bakers yeast in my hydroponic planters?
creeating nutrents would be epic
Great man. I don't bother with that shit at home. My reservoir is 1000 litres and I chuck in 500g of Diamond Blue or Special T depending on my mood and 500g of Calcium Nitrate. Recirculate it for 1.5 hours at mixing and an hour every morning before watering commences. That works fine. Not enough concentration of anything for precipitation.
For a laugh I thought I'd tell you what we do at work. 17 hectares of blueberries, raspberries and strawberries. All have different mixtures depending on whether fruiting or no, variety etc and all are going at the same time somewhere.
Current non fruiting mixture for raspberries (and yes calcium nitrate is always A):
A tank (1000 litres):
Calcium Nitrate 175 kgs
Calcium Thiosulphate 20 Litres
Potassium Nitrate 12.5 kgs
DTPA Iron 2.5 kgs
Mg 1.0 kgs
B tank (1000 litres):
Magnesium Sulphate 100 kgs
Potassium Nitrate 12.5 kgs
Magnesium Nitrate 25 kgs
MKP 25 kgs
Boron 94g
Mn 600g
Zn 600g
Cu 36g
Moly 24g
And we use Phos Acid (down) and Potassium Hydroxide (up) to adjust pH.
We run about 3-6 litres of each solution per 1000 litres of water depending on EC requirements as the plants change. That solution lasts about 1-3 days.
I hope I'm not being a dick, my only point here is that the systems you show are infinitely scalable under the right conditions, and that I do perfectly fine with my dinky setup at home (and I don't have to pay the fert bill at work).
Stay strong Bud.
4-5 grams of nutrient per gallon for our freedom unit users
A US gal is 3.785L so you will need 15.14g per gallon
ive been using Campbells diamond range commercially in my greenhouses since they released the range. would be nice if you could do a segment or segments on making fert from scratch. thanks bro
As a commercial grower it would pay you to make it yourself. As a horticultural business sourcing the chemicals should be relatively easy. Private individuals typically have to deal with a lot of red tape when it comes to oxidizers.
So basicaily a football team gatorade dispenser🙀
Perfect video for me. Have been thinking about it a lot, big thank you mate!
Thank you for the fantastic information! What is your opinion on adding magnesium Sulphate to the nutrient solution? I ordered some powdered hydroponics nutrients and it came with Magnesium Suplhate, and instructed to add it to the solution at a ratio 50% of the fertilizer and calcium nitrate. Apparently Magnesium Suplhate is an additional nutrient but i didn't hear you mention it in this video - is it necessary?
I think it's already mixed in with the Spec T bag he has
Hi do you have a link to a video you did going over that doser?
Great video just what I needed, would be good to see you make it from scratch. Also any information on organic hydroponic nutrient would be appreciated I've only found limited information on it being made out of algae or something. Cheers
aquaponics ?
@@Roo0ooD haha yes good point. I'm considering swapping back to aquaponics. Hydro is just a lot easier to manage
@@Roo0ooD I saw a place in America who made organic hydroponic nutrients but it all seems pretty secret squirrel
Hydrobuddy is great for making nutrients from scratch, although I'm sure that you would make one more entertaining video with less maths and more beer. I also rate the blog archive on hydrobuddy which is a treasure trove of great information for anyway looking to do a deep dive. After going down the rabbit hole, I am now supplementing my Campbell's fertilisers with EDTA (chelate to keep metals in solution), specific trace elements that are low in cambells, a pH buffer to combat pH increases (Potassium carbonate), I also use potassium silicate foliar spray to get silicon to the plants in the most cost effective way. My interest in hydro is how to grow plants as fast as possible so all the little bits that give an edge are great to me.
To maximise gorwth you need to maximise all the variables, the most critical one being environment. If you have the environment nailled down then you can look at the rest. My recommendation is to choose a growing method that gives you total control over all of the impotnat variables. Ideally, you want one that provides realtime feedback from the plants, so they can tell you exactly what they want.
Has the price gone up for those fertilisers?
Diamond Special T for 25kg is $223
Nitro Cal 25kg $78
Is it cheaper elsewhere?
Where do you get yours from?
Fertilizer prices have risen sharply due to global events.
Straight from the manufacturer. They sell to the public 🙂
What if I dont want to get my fingers dirty? lol
Bump, I want to see it from scratch🤓
14:57 you should be wearing a p100 respirator or at least a mask
I didn't and I breathed in a little dust , not even visible but I had a horrible taste in my mouth and a metallic taste that lased like 2 weeks (master blend) probably from the micro nutrients, specifically metals
also Ca(NO3)2 is a nasty oxidizer not really something you want to get in your lungs
I'm confused! He says the manufacturer of his nutrient recommends adding 1 gram nutruent per 1 litre of water, so I would have thought that equates to 20 grams per 20 litres of water, but he adds 5kg of nutrient into 20 litres water. What am I missing?
This is a stock solution. Not the final solution.
@@Hoocho Well that makes a lot more sense! Thanks
Maaate don't apologise for using the same units the rest of the world apart from the Yanks use - there's not even half a billion of them, 7 billion of the rest of us (including anyone under 50 in the UK 😉) great vid, and you managed to do all of it without mols, proving my chemistry A-level was a waste of time (like I always suspected)
why would you think people aren't interested in knowing how to make the stuff from scratch? You do realize this is RUclips, right?
Love the content Hoocho, keep it up 💕💕💕
The biggest hurdle to automation for me on the hobby scale has been nutrient balance. There's more to it than just PH and EC. But how much of each based on the plants life cycle. There's a whole slew of algorithms to work with regarding a sliding scale.
But tuning one without lab that has a gas chromo? Good luck.
wow thx Hocho have diamont t and nitro cal wating to pick up on wensday thx to your redit posts i chose those 2 a couple weeks ago started the rain gutter last week ago going slow cause work load but all good going 2 grow hydro potatoes only concern is will the potatoes block the net cups time will tell that one thx again mate you have inspired me a lot 1 thing ive noticed thou when u get into hydro (Dont tell the family) there gona be bloody expensive spuds any way its a steping stone 2 other projects keep it up Hoocho its great work thx from me
Arduino - You can do so much with an esp32 or Arduino microcontroller hope you work with someone on this it would make an awesome video :-)
i switched from arduino mkr and pico videos to hydroponic and this was first video i put on and right at beginning i hear arduino and pico and wondering if im watching arduino stuff until i remebered that Aussie accent
Hey mate could you tell me if the Campbell's nursery grade is suitable for in the paddock
Incredibly helpful, thank you. The information just doesn't click until I see someone walk through the process.
I use Masterblend, calcium nitrate, and Epsom salt in a 2,2,1 ratio. The Masterblend is solution A, and the calcium nitrate and Epsom Salt is solution B.
Actually, MasterBlend and Epsom Salt go together. Calcium nitrate goes in by itself.
Yes! nutrients from scratch video. Can't find info on how to do it anywhere...
Freedom units 😂
Has there been a video about the creation from scratch? looked through all the content. 🙂
Lets make nutrients from Scratch! TY in advance.
How about a plant wicking system?........to grow tomatoes or peppers....
yes. nutrients from scratch. Please let me know. Thanks.
Home brew is a nutrient. Haven't you seen how fat it can make you.
Goin Hooch
Thank you for sharing this with us. You answered some of my questions! Happy Hydroponicing!
how do you store your part-A concentrates?
I use masterblend 4-18-38, stuff would start growing, mold or bacteria, when left in the dark at room temp. Think some people recommend putting Sodium Benzoate to prevent growth, but now I put mine in the fridge. The part-B concentrate can be left at room temp nothing grows in it.
If you are going to use benzoate i`d suggest using potassium benz not sodium as some plants are sodium sensitive.
For some reason I thought you had to use your nutrient solution immediately once you mix it. How long is it okay to leave this solution for?
A couple months or longer it shouldn't dissipate as long as its in a light proof container or kept in dark. I mix mine in 2x two hundred liter blue plastic drums and it takes about 8 to 10 weeks till i have to make up more part a and b.
Just wondering where you source campbells diamond Special T. I tried norco and drew a blank. There is a comprehensive list of ingredients in one of the ebooks I have but it means sourcing things like Mo trioxide that costs a small electric vehicle.
Nutrient companies like to use oxide equivalents in the guaranteed analysis, such as CaO, MgO, K2O, P2O5 etc. in place of elemental Ca, Mg, K and P. If you use sodium molybdate, you`d need 7g per 1000L of diamond T nutrient solution @ 1g/L.
4:06
Would love to know more about making my own npk and part b. I've seen different videos about how but not super clear
I mean, in my mind that you should be able to buy the 3 parts in separate powder bags and use it from there like you did in this video but idk for sure.
I was using the diamond spec t in my nft system with good results but recently switched to diamond blue and nitro cal same ratio but the results are much better, I'm growing mostly winter crop of salads, cabbage,broccoli,Chinese cabbage and kale. Before had signs of nitrogen deficiency but now everything is green as can be.
Diamond Blue is epic as a foliar spray too.
@@bradcarby3765 yes you are correct I have also used it that way mixed with jadam wetting agent works great
i always get nitrogen deficiances, i never go over 2.0 EC, maybe i wasnt putting part be in 1st so it dropped out of solution ? i know iron and manganese drop out of solution easy
Doing a bit of excel, in order to make 1 Liter of "watering water" at a time of half strength solution (I want to grow coriander in pretty small containers, I mixed 12.5g of A and B into 500mL bottles. It means I need 20mL of these base solutions to make 1L of half strength watering water. I'll get 25L of watering water for leafy greens from these 12.5g of inputs in these 500mL bottles. For A, i used Kristalon from Yara. For B, I used Calcinit from Yara. I'm in Bucharest. I figured that it would be a pain to measure less than 20mL at a time from these base solutions. I ended up with an EC of c.1.5
A syringe is useful for measuring very small amounts accurately.
@@atomizer2665 Indeed, just didn't have one laying around so i improvised. But yes, totally.
Yes please a video on part a and part b break down!!!!!
What are the benefits of creating nutrients from scratch? definitely interested on the future video!
You can create crop specific nutrient formulations from one set of agricultural chemicals. Some countries restrict the sale of some chemicals (typically oxidizers) so YMMV depending on where you live. The main chems, which typically come in 25kg sacks are: mono potassium phosphate (MKP), potassium nitrate, calcium nitrate, magnesium sulphate, potassium sulphate. Ammonium sulphate and magnesium nitrate can also be quite useful. Most folks use a micro mix such as STEM etc but the purists prefer to use individual micro`s (Fe, B, Zn Mn,Mo,,Cu). If you are a small scale grower you may be better off using a 2 part dry nutrient vs making your own from scratch. The price of chemicals has increased massively and will likely keep going up which should be taken into account. Its important to note that you should always use distilled or reverse osmosis water for your stock solutions to ensure they are accurate.
Expressing interest in making nutrients
For us Americans users remember 1 gram is 15.43 grains and that 1 liter is 4.226 cups. Also 1 hogshead is about 238.48 liters.
1 liter is exactly 4 cups, a cup is 250ml
@@evanwoodroffe32884 cups is 0.946353 liters or 1 cup is 236.588 ml. Metric is hard my dude.
Yrs please. From scratch
Thank you for this advice
I'm 100% here for from-scratch chemistry!
The highest quality and cheapest fertilizer is a fertilizer obtained by mixing chemicals purchased from a wholesale supplier of chemicals. Therefore, I will hope that the author of this channel will not be like housewives who buy bags with the inscription "fertilizer A" and "fertilizer B" in a garden store and dissolve them according to the instructions on the label. I hope to see the composition in generally accepted chemical names and concentrations in grams per liter of base solution.
Making nutrients from scratch isnt right for everyone. For one, wholesale suppliers of chemicals may not be legally allowed to sell certain chemicals to private individuals. The other issue is what is available in one country may not be available in another, for example, if the formulation calls for Zinc at 13% and they only have access to Zinc at 9%, the weight needed will be different, so it will involve more education than just a basic how to. Folks will also need a scale accurate to at least 0.001 of a gram for the micro`s. If growing is your passion, making nutrients from scratch is the logical step but its not for everyone.
@@atomizer2665 You're talking utter nonsense! Individual chemicals of the fertilizer grade from which nutrient solutions are mixed are available in the same garden stores! Also, no ultra-precise scales are required when volumes of about ten liters are being prepared. Ordinary electronic kitchen scales are enough. Adding powders to a canister of three bags is no more difficult than from one! But the bag with the inscription "diamond spect" I have no idea at all what it is and how it can be replaced in my particular locality! At the same time, potassium nitrate - all over the world will be called potassium nitrate and magnesium sulfate will also be magnesium sulfate. It is enough not to be an idiot not to make a mistake in these names.
@@ph08nyx
I guess you didnt read the "from scratch" part, which means not a pre made 2 part dry nutrient like campbells. "From scratch" meaning using individual chemicals such as mono potassium phosphate (MKP) potassium nitrate (KNO3) etc along individual micro`s such as Fe-DTPA, boric acid, sodium molybdate etc. Good luck trying to weigh a fraction of a gram of anything accurately on a kitchen scale :) A 10L stock solution of Diamond special T (200x concentration) will involve a chemical weight of 0.564g so you will need an accuracy of 0.001g
Fwiw, the elemental ppm of Campbell`s Diamond special T at 1g per litre equates to NO3: 82, P: 17, K: 267, Ca: 0, Mg:17, S: 42, Fe: 1.5, B: 0.28, Zn: 0.23, Mn: 0.75, Cu: 0.17, Mo: 0.11, cost to make this formulation (converted to Oz dollars) would be $3.66/kilo. A quick google suggests a single kilo could cost as much as $24, a 25kg bag will be cheaper per kg but still silly expensive when compared to the raw chemical cost. Garden stores will generally buy from chemical wholesalers, split into smaller weights and quadruple the price per kilo. Over the last few years, the cost of agri chemicals has increased by 50%-60% in some cases,, 25kg of calcium nitrate (yara calcinit) used to cost the equivalent of $33 AUD, now its $51.25.
Glad to see you're still here. Bless you!!!!!!
Wouldn’t the mixed solution have a different specific gravity than fresh water? That would then throw out the concentration if you’re basing it of mL instead of calculating by weight would it not? Or am I simply overthinking it?
You are overthinking it:) If you make the stock solution accurately you will know the weight of chemical vs volume, ie, grams per ml.
You need to consider the solubility of the chemical and the temperature the stock solution will be stored at. The more concentrated the stock the less room you`ll have for downward temperature swing. Most companies that make dry nutrients will give you the recomended maximum concentration, typically 100g -150g per litre, the 250g per litre shown in the video is at the very top end but Oz is a warm place. To ensure the elemental accuracy of the stock solution you should use with distilled or at least reverse osmosis water. Using tap water will likely result in precipitation and/or elemental changes due to chemical reaction. If you contaminate a stock solution using water with an unknown elemental content, you wont have an elementally accurate stock solution.
@@atomizer2665 Most importantly, you have to convert P and K % content to real one if the P and K content is listed as P2O5 and K2O which mostly is. They still use the outdated description which is misleading. P2O5 to P = multiply P2O5% by 0.44 and K2O to K is multiply by 0.83. So if the label says NPK 10-10-10 it's actually 10-4.4-8.3 real P and K weight. The P2O5 and K2O isn't even in the fertilizer, that's how stupid it is...
@@sixmillionaccountssilenced6721
This is why i said "elemental" :) Some nutrient companies mix oxide and elemental values in the guaranteed analysis, most provide the elemental and oxide values
Love the intro slide :) ..