Ok so... A couple years down the road and I finally have a new cube up and running. I went with a marineland 37g "column" tank. Basically a deep cube. I drilled a 1-1/2" drain connected to a 10g sump. Return pump is a quiet one 3000. Light is the Ocean Revive t-247. Skimmer was a cadlights pls-100, but was changed out to a bubble magus curve 5. Circulation comes from a Maxpect Gyre 130. Tank has been up about three months, so by all measures still considered "new". I have a pair of clowns, and a yellow corks wrasse. I have lots of frags right now, but seeing decent growth. I keep alk at 9, cal at 440, and mag at 1400. I use two part for cal and alk, and Kent m tech for mag. Pretty happy with the system so far. I'll post some pics, or start a chronicle on it soon.
Jason