I have 2 - K2's in my 54 corner and they seem to work well. However the widest point is 29" so you might want to consider K4's for the little difference in price. You can buy the new Koralia DC pumps that only work with their wavemaker but it is pricey!
Check out
The Cultured Reef -
Index for great prices on the Koralia pumps. Dick is a TR sponsor and all around nice guy.
