im not big on chems either bad stuff no wonder most of these guys on here have plant problems even when i started in 80s i grew perfect plants with no chems under tube lights they were great even now i use cfl or tube with a few 150 watt spots if you need chems to grow weed than your weed sucks it should be ass kicking to start with soil or organic works wonders chems arnt going to make you any higher ive used bushmaster on ocasion becouse of limited space it keeps them small n compact then at end of cycle i flush with clean water for weeks