I HAD 2 maxi-jet 1200's moving the water in there. Now I have a closed loop system powered by a Blue Line 30 pump and passing thru a chiller on the way back to the tank. My return is split in two with a SCWD, alternating the current from left to right. I also have an aquaclear 50 filter running just socks of carbon and a AquaC Remora protein skimmer.