The TERM "Master Grower" was a construct of A.N. to make "suckers" buy large amounts of UNNEEDED, watered down, supplements that A.N. "says" you need to GET to that level!
You can do far better with less and for far less money! YOU own or run a hydro store that SELLS A.N. and that puts you more on the level of a schill for a product, NOT a "Master Grower".....
You may get there one day but, I would say that you should be able to get to that "plant potential" with more then one nutrient line! And for sure more then just one method!