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- Mar 16, 2020
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I have a Red Sea 525XL mixed reef tank. I have a Neptune Apex system with Trident and DOS. I use my DOS to dose ALK and Calcium. My PH ranges daily from 7.7 to 7.9. I keep my ALK at 8.5 and Calcium at 400. I am considering adding Kalk to my ATO for the purpose of raising PH. I am looking for advice on this from someone who is currently doing this or has in the past.