I'm ready to find out.... I have different Epsom salt, humic acid, and gypsum...... My gypsum is down to earth.... My Epsom salt I bought at grocery store... Says it's good for plants too! And my humic acid is npk..... I just hope it will still be fine... That we grow different ways? I'm in HP promix biofungicide mycorrhizae high porosity peat based soil... And you grow hydro.... Mine is partially hydro but I'm still using soil..... I appreciate your help and advice... You grow some beast ass plants.... That exactly what I want.... I'm not worried about the price.... I said that.... I just didn't expect npk bags to be so small... It's funny when they arrived..... I was thinking where is it all at! Lol oh well though.... I would like if you looked at the feeding schedule I posted for the 5 gal bucket to see if it's correct.... I don't know if my gypsum is correct the whole way or the Epsom salt is.... Thanks again.....