Im going to try and get the rest of the tank done today..i have acrylic to make the overflow box, but im not sure i want to go with that or use 8" pvc cut in half for the box..square or half circle...hmmmmmmm..i hate decisions..lol..pics to come when i figure this out..
I voted black sand also, as long as you dont mind vacuming your sand bed periodically. The sediment/detrius that collects stands out like a sore thumb. I recomend it for all but sps tanks, as the light reflection is almost nothing with black sand, and can cause the undersides of the sps pieces a bit dull/odd looking.