Yes, bottom of net pots should be at water level to prevent corded roots. Sorry if it was answered, just trolling...Dead sexy, i always wanted to make a big RDWC like that. Alot of work, planning, and cash, but it looks sexy. I ended up going blumats and smartpots instead.
question : arent you supposed to keep the bottom of the net pot at water level so you dont get roots in air between the net pot and the water? Something about cord roots ?
Capfan-
I'm not sure yet but I don't plan on having anything closer than twelve inches to the bulb, and yes I defoliate a bit everyday.
Jamorg13-
Thats correct!