I'm committed to being an "organic only" grower, but in intrigued by the feasability of using primarily fermented plant extracts for "nutes" in a hydroponic system. The system that that I'm most interested in is the "undercurrent system" found here: Home : Current Culture Hydroponics, superior hydroponic systems. Has anyone tried this? What FPE's did you use? What sort of system did you use? Did you notice a difference in the medicine? Taste, quantity, growth rate? Does mycorrhizal inoculants work in hydro systems? Should one expect PH problems? Comments by anyone having done this are welcome, or even your conjecture and hypothesis by ones who have not! Thanks!