go to your local college library and look up all the books on hydroponics (probably from the 1950's) and read the recipes on there for nutes. ~Ryan

Here's a site that may help you but it's for tomatoes only.

Here is a link that might be useful: Nutrient solution

I interpret your question that you would like to mix your own nutrients. Search the following "Hoagland Hydroponic Nutrients" and "Cooper Hydroponic Nutrients". Their recipes are very easy to follow. In the case of Hoagland he uses "tbsp & tsp" and "oz" as the unit of measure. In the case of the Cooper recipe, "grams" is used. You will need a good weighing scale for this. Some say that those formulations are obsolute. I don't believe so, I'd rather call them generic.

Could Allan Cooper be an ancestor of Ryan Cooper? Just thinking.

Great ideas!
I am looking to find out specifically about a few of the most popular liquid hydroponic nutrients on the market. How much of each ingredients do they use to get the final product. Ingredients are listed but the amounts/ method are almost always a trade secret. Thank you for all the leads, I will check them out now.

Dr. Cooper holds no trade secrets. Same with Dr. Hoagland. The ingredients are generic and standard. The procedure of mixing is very simple and straightforward. Check page 6 of the website below.

Here is a link that might be useful: Mixing Hydroponic Nutrients

I would like to make a recipe using the following:

Amonium Nitrate
Magnesium Nitrate
Potassium Nitrate
Magnesium Phosphate
Potassium Phosphate
Potassium Carbonate
Potassium Sulfate
Magnesium Carbonate
Magnesium Sulfate

Ending with a liquid fertilizer with an analysis of 2-1-6 (with0.5Mg)
Using these things what might be the correct proportion in % or grams --roughly o.k. also--would be needed. Any help thank you -also edurink/all thanks for the link

There is an online book called "Secrets to Hydroponic Nutrients." It does not give a recipe of the ingredients you listed but does discuss them. Just search the book title & it will come up.

maybe this will help you
http://www.hal-pc.org/~menendez/hydrocal.html

Fertilizer formulas are not secret. All the information needed is on the label. You just have to know how to do the calculations, which are rather challenging.

The ratio you have is very strange, N is far too low relative to P and K. Despite that, here's one of several ways you could make one liter of your 2-1-6 solution.

First you have to convert the 2-1-6, which is an archaic N-P2O5-K2O, to N-P-K.

P2O5 x 0.43 = %P
K2O x 0.83 = %K

After conversion, you have 2N-0.43P-4.98K

I'm assuming you want to use all nitrate-N. You need to know the elemental percentages for each of your fertilizer salts. They should be on the fertilizer container. Remember to convert P2O5 and K2O to P and K.

1. Start with the 0.5 Mg and use magnesium nitrate - Mg(NO3)2 6H2O - which has a molecular weight of 256.41. The molecular weight of Mg is 24.3 so 24.3/256.41 x 100 = 9.5 % Mg

Multiply the percentage required by 10,000 to get mg/liter. The 0.5 Mg is roughly equivalent to 5,000 mg/liter or 5 g/liter.

To determine how much magnesium nitrate is required to give 5 g Mg, divide 5 by the %Mg in magnesium nitrate written as a decimal. So 5/0.095 =

52.6 g magnesium nitrate per liter 2. Determine how much nitrogen is supplied by magnesium nitrate. The percent N in magnesium sulfate is 28/256.41 x 100 = 10.9% so the 52.6 g magnesium nitrate provides 0.109 x 52.6 = 5.7 g N

3. Use monopotassium phosphate to provide the 0.43P. Monopotassium phosphate (KH2PO4) contains about 22.3%P and 28.2%K

Multiply 0.43 x 10,000 = 4,300 mg/liter = 4.3 g/liter
4.3/0.223 =

19.3 g monopotassium phosphate 4. Determine how much K was provided by monopotassium phosphate.
19.3 g x 0.282 = 5.44 g K

5. Use potassium nitrate (KNO3), which is 13% N and 37% K, to provide the rest of the N.

The 2%N represents 20,000 mg/liter N or 20 g/liter.
From step 2, you already have 5.7 g N supplied by magnesium nitrate.

Therefore, you only need 20 - 5.7 = 14.3 g N.
Take 14.3/0.13 =

110 g potassium nitrate 6. Determine how much K was provided by potassium nitrate.
110 x 0.37 = 40.7 g K.

7. For potassium, you need 4.98 x 10,000 = 49,800 mg/liter = 49.8 g/liter

From step 4, you provided 5.44 g K
From step 6, you provided 40.7 g K.

Therefore, you only need 49.8 - 5.44 - 40.7 = 3.66 g K

Potassium sulfate K2SO4 contains about 44%K
3.66/0.44 =

8.3 g potassium sulfate

Thank you all again for the help.
DHershey-THANK YOU! I am so happy you had the kindness to go into such detail! I am so happy! You are right is challenging! I need time to digest what you've written and then I will work on my question more. But for now thank you!

Bumping this up.

If you are trying to reverse engineer a product consider that in the USA, by definiton, "guaranteed analysis" is the MINIMUM percentage of each plant nutrient claimed. Proprietary surfectants and stabilizers will not be listed. The source and quality of the ingredients will factor as well. Thus your results will vary.

Dear emmaF,
If you are still searching for data on nutrient solution fertilizers, please have a look at my web site from Australia. It takes all of the mystery out of making your own nutrient solutions.
Jimr007
Australia.

Here is a link that might be useful: Simple Sand Hydroponics

Or, if yhou don't want to spend a week calculating and mixing nutrients, you can purchase very high quality pre-mixed nutrients and the work is done for you.

Unless you have hundreds of plants, premixed solution is pretty economical.