Kool I have been using shultz 20-20-20 every 2 weeks 1/8 tbs per gallon cuz of that mg I have. I was thinking of going to home depot tomorrow and grabing some composted cow manure with humus and some more perlite(I spelled it wrong in that other post on soils) I think I am getting to a point and not getting any farther. The post that stinkyattic said about mg causing lockouts and burns. I have not burnt anything. If any thing I have been underferting them. I didn't want to go overboard. I am one of a few newbees who underwater and every thing else. And I would agree with razzapiggy stinkyattic is becoming my hero every day. Even if what she tells me means I have to start all over but I can deal with that for all the good smoke I will have.