im in hydro, but grew organic in the past, always used fabric or burlap sacks over pots and always bottom fed to avoid a list of problems that come w/ top feeding.. if ur in soil id go with GH nova series as its almost pure organic, 2 part easy and great nutes, i prefer the maxi series in hydro but it works well in soil or soiless mediums to just change the ph...AS i said i did side by side compares using fox farm, and its better than advanced 3 part, i liked the tiger bloom, but GH always came out on top in yields,taste and overall plant health. i believe advanced was lacking in somthing, wich was not the case w/ most other nutrient lines i used..if i could no longer get gh id go to plantlife 3 part, then foxfarm, then B.C., THERE WAS A COUPLE OTHERS I LIKED BUT CANT REMEMBER THE NAMES OFF HAND.