little on the late follow up ...Just wanted to express Hydro can be some what non-forgiving but you learn how to remedy things so ....my Harvest was Great and I don't believe I will be changing my nutes ..Masterblend tomato and vegetable formula is OK with me (Green Crack, White Critical also LSD)I also have been using the Masterblend Fertilizer 20-18-38 how have you found it ..for me there loving it