Would a 120 watt be enough to run over my 30 cube(18x18x18)? The fixture is dimmable and has 55x3watt leds....28 white(12,000 to 14,000K) and 27 blue(460 nan). I keep an anenome and a few soft corals. Would like to add other corals. This will help me make my final decision. Need all of your valued opinions. Do you need a few reds,violets,and greens? I want to keep it as simple as possible.......Thanks for the info