i did side by side compares w/ a lot of diferent huts over the years and the results surprised even me. GH maxi series blew away advanced 3 part and even fox farm, and foiliar pro in a 4x4 flood and drain table..actually the fox farm beat out advanced to.. but all my compares were with base nuts only, no additives or boosters..maxi has everything ur plants need, so does fox farm but the advanced was lacking in something, plants just didnt look as healthy as w/ the others. ive also did tests w/ plant life, B.C., Rockwool 2 part.and many others. GH maxi series and their nova series are both simple and great products, so is GH's 3 part but a little more dificult to get right for beginners as u need to learn to read ur plants and what they want more or less of..overall yields were highest with maxi, nova,foilar pro,and fox farm.advanced was last, even B.C. and plantlife did better..oh i take that back it was better than the rockwool nutes they are complete garbage!