I have the 48" over my 75. Works great. Wish the cooling fans were more powerful. True it has 2 x 150 HQI , but output is supposed to be equivelent to 2 x 175 according to coral life. Also on the 48" its odd it has only 3 moonlights. I would have thought either 2 or 4 for balanced illumination.
Doug
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