Very true again indeed. I might add that having experimented with several Advanced Nutrien Additives, some work and some don't work as well, bvut they are trying, and they are doing it for ...errr well "profit", but for the medical marijuana community as well.

my final point is. NASA uses General hydroponics 3-part. A fairly credible source. Peace That is probably what Z meant when he mentioned GH' "own science"
later. good thread