Ok I have a 65 gallon mixed reef. No sps. Nitrates are 2. Phos .04. Alk is 12. Calcium 425 and mag 1300. I cannot for the life of me get and maintain my ph above 8. During the day it's 7.9 and then dips to almost 7.5. I just started running kalk but I use a smart ato to top off so the water level in the sumo drops 1/2 inch before it fills each time. Any suggestions? Was thinking of putting an airline outside to my skimmer.
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