I have an old Oceanic standard 55 gal. tank that I've used as a sump or refugium a couple times. It's got a hole drilled on the lower right side. It's old, rough looking but makes a GREAT sump and/or fuge- which I don't have a need for right now. It's basically free. Just come grab it anytime and maybe throw me a cheap small frag or two and call it a deal I'm in far North Austin/Round Rock area.