Since Im on the project of making my own frag tank that put e o the position of using Bing and google for Ideas and I found some frag tanks without sumps so i decided to bring the thread here and see what you guys think of it.
A sump isn't a requirement for a reef tank so why would it be a requirement for a frag tank? You can treat it the same as you would a sumpless tank. I set one up with a sandbed, heater, light and a canister filter. It had no problems until I neglected it for 5 months.