Use that shit in small doses or it will fry your plants. Seriously! Start with 1/4 tsp per gal in Hydro on Indicas. As soon as leaves look slightly stressed remove the stuff and flush. About 2 days. Then water only for a while. Use less in soil because it takes longer to flush the stuff out if the leaves start yellowingl Sativas-Good Luck! The Bushmaster, Gravity and Purple Max are all strong shit. Be careful! I have Bushmaster and wont ever use it again. The Gravity and Purple Max do work, but dont follow the manufactuers instructions.