Works in hydro great. (colonize roots in hydro) You just have to remember to feed them, lol. I feed them sweet from botanicare. They eat sugar.
I use the full House and Garden line, minus drip clean. So for roots its root excelurator and Great White as reccomended by house and garden. I feed those and the house and garden enzymes Sweet Grape. I also add trace amounts of Gravity from Humbolt Wholesale. At the very end add humbolt Nutrients SnowStorm, but realize you have to throw all tubing away if you do. You should throw tubing away every run anyway. :)Happy Growing!