ttt for some answers.

Also, where would you get that 1/4" plastic/plexiglass cover that the net pots sit into? I've been to Lowes and Home Depot and all they have is clear in that thickness and had no suggestions on where I could get some.

DND, have you identified and priced out all the plumbing pieces? I'd like to have a list to take to the store with me when I'm ready to build it. I'm not too concerned about the reservoir... Lowes carries a 50gal Rubbermaid tub with similar dimensions (42"x21") to that system that only costs $18.