I have a seriously sexy 36" tank and stand available...
I bought it a couple of years back intending to plumb it into my main system but that turned out not to be feasible...
It's available.
I believe the tank is 50 gallons, but you could get a 65 for it...
This was the original sales thread...Al is a friend of mine and I was with him when be bought this system originally from an engineer who designed it himself.
http://www.canreef.com/vbulletin/showthread.php?t=65839