NCnav we built our hydro setup for under $250 and thats with the ebb tray. You have to get that at your local hydro store but everything else we built ourselves with parts from walmart / hydro store / and home depot. We have a 2'x4' ebb and flow tray with two tanks connected to each other under the tray itself. The tubs were bought at WalMart for cheap and I think the total capacity is 24 gal. Let me know if you want some pictures.