i'm using the foxfarms line right now!! for this exact use, and LOVE what i'm getting from them, beautiful buds, and i'm using at full strength, started at 1/2 cause my babies were showing nitrogen deficiencies early! just an FYI, i've never used ph up or down or hydrogen peroxide on mine and haven't noticed any issues with ph YET, so you may not have to sweat that too much. I would follow the feeding schedule they give you but start at 1/4 or 1/2 just to be safe, you can always add more later! also, get yourself some SUPERTHRIVE, it's cheap and works wonders on rejuvenating these babies when you burn them, etc. also works good for all around vigor if you wana add a few drops to a gallon everytime you water... and one thing with foxfarm Big Bloom... it has like some sediment in it so when you pour it into your pitcher, jug, whatever you water with, keep stirred as you water or that crap sits at the bottom....good luck growing!