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My Calcium levels are pretty steady anywhere from 425-455ppm, my Alkanity is running pretty high dKH 14 (is this bad) and my Magnesium is at 1350ppm. I'm topping off with R/O water trying to get the dKH to come down a bit and I heard that with higher Mag levels you get better Coraline growth? Is there any truth to that?
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