Whats your ph? you can do everything right and if your ph is off you will get nute lockout ect.Mmkay need more info to help you out. What is the ph, how often you feeding it, what is the ppm of the water u feeding it.
I've never checked the PH level. how would i go about that..???
get a ph meter and maybe some strips.. get back to us when you know the ph. ph means everything 6.5 is idealGet a soil ph test and if u cant get that test the water run off