So i have a new tank that I am setting up. The tank is an Oceanic 210 (72"x24"x29"). I am thinking of running 2 XM 250 watt 10K's on the outside and a 250 watt 20K Radium in the center. I am thinking of using the Icecap MH ballast and use 2 6ft VHO actinics. I would like to keep SPS and Clams exclusively. Do you guys think this would be fine? I am working on a hood that the lights would be about 10" off the water. I really do not want to use 400 watters because 1)dont want a chiller and 2)dont wanna use that much power!