I've grown in the out doors in the 70's. Man, things have changed. I have 2, 4X4 Tents with 2 Hydro Crutch lightsd in each tent. I'm trying a Master Blend, Epsom Salt and Calcium Nitrite mix.
The formula I used was:
PER GALLON OF WATER
SOLUTION---A
Master Blend---600 Grams
Epson Salt 300...