I was just wondering what the lighting requirement difference is between a 75 gallon and a 90 gallon. Keeping SPS and clams, along with LPS and softies?
A 90 gallon tank will be deeper, thus needing more lighting to get to that clam on the sand bed. With a 75 if your using MH lighting, 150w bulbs are probably fine. With a 90 you def need 250's.
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