Im sorry some of you dont understand. N.A.S.A. Is basically who developed GH formulations. Former N.A.S.A. Botanist Dale Chamberland does grow cannabis in Colorado. He also owns and runs High Altitude School of Hydroponics. When using GH products it is recommended to flush with Florakleen for a minimum of 7-10 days! Am I the only one that reads and follows directions. People use products incorrectly, leave out steps, leave out products and wonder why they dont get the same results others get. I never said N.A.S.A. says to use florakleen. I said they helped delevop GH products. This is why N.A.S.A. uses GH. That and they know great products. If anyone is the authority on plants its N.A.S.A. Botanists. I wonder how many here work or worked for N.A.S.A.
Of course they recommend it... How else are they going to convince you to buy their bottle of sugar water with 2 drops of blue#2 food coloring for $10 if they don't recommend it.
High altitude school of hydroponics... Lol. A grand Institute of higher learning, I wonder how many botanists got their doctor of science degree from that prestigious institution.
Ya those nasa botanists, they know their plants... No other botanists in the whole world are a good as those guys.Ya the entire commercial agricultural world can't hold a candle to the prestigious nasa botanists. The saddest part is you are actually believing all this hype, but who cares. GH does make fine nutrients I'll hand you that, but it's not because of nasa or some crackpot in Colorado running a "school" of hydroponics, just lol.