I recently decided that I want to try and care for my dream, a reef tank. I was under the assumption that they were difficult and too expensive. After visiting a local store 2 weeks ago, I still want to do this. What I have right now is a 55 gal Long tank, 2- AquaClear 301 pumps powering an undergravel filter system for my Cichlids. I was wondering if this will work for water movement? I wanted to include some Tridachinds; I am cruising the internet and reading like mad, any suggestions on what "zones" or "types" would work for someone coming over from the freshwater side??