Nutrient Solution

One-Half Strength Hoagland Solution

Nutrient -grams/40L

Solution A
Calcium nitrate -11,800.00
Sequestrene -1,537.60

Solution B
Potassium phosphate, monobasic -1,370.00
Potassium nitrate -5,066.00
Magnesium sulphate -2,500.00
Zinc sulphate -2.24
Manganous sulphate -15.64
Copper sulphate -0.84
Boric acid -29.00
Molybdic acid -0.20

Both solutions A and B are used at 1:500 ratios (76.9 ppm).
KOH is added to adjust the final nutrient solution pH to between 5 and 6.