I've been toying with the idea for close to a year now.. and I think I'm confident I know enough to try it out now. Stupid right? This coming from a former hydroponics salesman. I finally came up with a design I like, and it's going to cost me probably under 50 bucks to set up the system itself, minus the fish. So this week hopefully I will get together my plant tray, medium, and build up the prototype with the rest. Maybe I'll keep this thread going as my project log.. who knows.