Optimum Nutrient Levels for Cannabis. A Scientific Study

rkymtnman said:

what nute(s) are you using to achieve it?

Click to expand...

Flora Micro @8ml/gal
Epson Salt @2.5 g/gal
N-P-K as needed. Different strengths mean different amounts.

Raw Industries Nitrogen 20-0-0 @1.7g/gal
Triple Phosphate 0-46-0 @ 1.1g/gal
Potassium Chloride @ 0.3g/gal

been using this ratio for 2 weeks now. seems to be fine.

Lost the White Widow crop. Strain in pictures is Critical Mass. Water uptake is about 1/2 gallon per day.
I waited until crop is nearly finished before posting results. Please disregard previous nutrient recipe.

Correct nutrient recipe.

Amount of fertilizer I used to make Stock Solution mixes per liter of distilled water.
Ca(No3)2:4(H2O) 250g
Magnesium Sulfate Heptahydrate 493g
NH4NO3 100g
KNO3 200g
KH2PO4 227g

Chelated Iron 5g per liter distilled water

Hoagland's Solution for micros.

I used a Fulvic acid and Sillica foliar spray every two weeks during vegetative stage until flowering.

Reservoir Additives:
Root Wizard @ 7.5ml/gal
Fulvic acid in reservoir@ .42g/gal
MSA @ .6ml/gal
Amino Acids @ 2ml/gal

I use an 8 gallon system so divide each by 8 for amount of stock solution in ml/gal







Need to work on Low Stress Training and my pruning methods.
Later....
Nirit Bernstein published another paper about the importance of a high NO3:NH4 ratio.