AI Sol super blue (not sure the of your tank). I'm thinking 2 modules for a standard 75. This is what I rock on the big reef and I keep a ton of sps. Gotta be careful when you fist set them up. I started at 30% on all 3 colors and upped it 10% a week till I was at 100% then I moved them closer to my water (they are 15 inches from the surface now). Pricy yes, but I never have to buy bulbs... And the whole set up only uses like 80watts or something crazy like that
I switched from 2x250w MH and 2x140w VHO to two AI Sol Blues and their controller for my 60" 100G reef and could not be happier.
I mounted the fixtures 12" above the waterline and running parallel with the tank rather than perpendicular and the coverage is great, no dark spots and plenty of overlap. Best of all with my lighting schedule my Kill A Watt EZ meter says the lights should now only cost me $40 a year to operate versus the $25 a month or more for the old setup!
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