Xerxes3000 is selling a custom 24" x 24" x 34". It's taller than your average cube, but that's what sold me on it... – I bought the first of his twin columns he has for sale. You'll need a Marineland stand, but J&L sells them.
http://www.canreef.com/vbulletin/sho...d.php?t=125548
KJ