I have 2-gen 2's over my 75, and while you would need a second unit to get complete coverage, you could easily get away with one for now. I also have my lights about 9-10" above water and run them at 55%. I have SPS
half way down the tank and a some SPS
frags on the sand bed and they're both doing very well.
Just keep the sps
under the pucks and not on the outside where it's not getting direct light. Place the lower light hungry corals there.
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