Ive always been a dirt man so this is all pretty new to me, wish I would have known about the ehavy duties, guess I should have asked the master lol. Im doign a couple of these so I may try one with the red misters and one with the popup sprinkler heads. This started on a bit of a whim for me to try out aero and has become a fun project, thanks again. Instead of putting a drain in the bottom Im using just a small 76 gph pump that Ive attached to another plain ol 30 gal tub. Ive run a tube to the bottom of my res and one to the bottom of the new tub. That way I can just suck the old nutes out into the extra tub, dump it, mix the new ones and then pump them right back into the system with the same pump turned around. Seemed pretty efficient. Ive got a bit more space to work with then I originally planned, I have mine spaced out with one net pot in each corner and then 1 more smack dab in the middle, if I keep an eye on them and trim if neccesary, do you think I could get away with vegging to about 12-14" and then flowering without the plants or the roots getting to crowded? As I mentioned before I use mostly flourescent so I have side ligthing as well for better penetraion, I usually throw a 75 watter on them for flower in addition to the 8 flor setup. And just FYI they are about a 50/50 IND vs SAT