I currently have a 120 gallon reef tank (48x24x24) and have been using a Coralife Aqualight Pro for the lighting. It has 2 250 watt Metal Halides and 2 96watt Power Compacts - for a total of 696 watts. The metal Halide bulbs are XM 15000k. I have mostly SPS coral (various Acropora) with a few...