tas5tas, have the same exact tank setting up. Might eventually do some other corals, so I am going with the 4-bulb. If you are considering a 4-bulb AT ALL, I am getting an aquaticlife t5HO fixture. The 2 MAIN features I love about this fixture over the others, is 1, that all 3 lights(2 bulb bank, 2 bulb bank, LED's) use 1 cord. And, 2, that there is a programmable digital timer(w/battery back-up for remembering lighting programs) built into the lighting hood. This makes a SIMPLE single-cord plug-n-play application. I have an old house, with horrible electrical design, and # of plugs means quite a bit in terms of space and multiple strips. I have 1 8-plug strip, and it does just perfect. The circuit is a nice 30A circuit, so should be fine power-wise. If you are interested in hearing about this, I should be getting it in thursday. If you send me a PM, I can just give you an idea on quality of the fixture, shoot a few pics, whatever you want. Let me know, and good luck. Also, the reason I liked the idea of 4 bulbs, is because of the depth, a few extra watts will penetrate a bit more.