I have been using small amounts of the FF Ferts i have left over from before. I also plan on adding some molasses (mainly to feed the soil microbes). As soon as my clones root so i can have my air stone back to make molasses tea. But yeah the goal is to add as little as possible during the grow. I have been using Fox farms Growbig (3-2-6). I accidentally bought the hydroponic formula( it has a lower PH), and i dont really need the extra veg ferts. So i just use it at a few drops per gallon to bring my water PH down a bit. And since i started flowering i've been adding FF Bloom boost organic (.01-.3-.7). @ just a teaspoon per gallon. (again just using up what i have) Also I plan on having to add some micro nutrients, as i did n ot add any to the soil mix. i'm thinking a shot or 2 of epsom salts during flower will do the trick. The rest of the micros (Fe, Mb, Mn,Zn,etc...) i think i have plently of in my crappy tapwater.