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How long have you had the corals?
Temp at 75 is a little low, but probably not catastrophic. 78 would be better.
Specific gravity is too low for a reef. Should be 1.026. How are you measuring? Hydrometer or refractometer, and has is been calibrated?
Well within limits doesn't tell us much as far as test results. What are the actual values?
Lighting?
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Pat
Current Tank Info: 125 in-wall , 40b sump. 6 bulb T5. ASM G2 skimmer. LPS and leathers
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