AdamRS80, I have spent a lot of $$$ on this thing. I really have no idea. Lights: about $850.00 so far and am not done with that yet, aragonite base rocks about $150.00 also still adding and building, aragonite for plenum about 180 pounds, nylon screen, pipe and egg crate for the plenum, not too much at home depo. 3 power heads, three larger pumps from DrsFosterSmith.com so they were $10 to 36 dollars plus the small shipping. Even the large pumps were cheep there. Maxijet 1200's were $20.00. Timers, man there are a bunch of them for lights and pumps. I just got 2 digital ones b/c 2 of the pumps switch so frequently during the day. I just ordered their starter pack specials to begin with. And visited LFS's. I am also thinking of ordering some of their special pieces too, like you are. As for livestock in there, I've spent thousands. The stand was built by my son and I with about $60 worth of material.