what is the PH safe range when dosing alk


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itis a new 75 setup, only rock and few clownfish in my tank for now, reverse lighting in refugium, realized ph swings widely from day and night as 8.25 at noontime and 7.85 at midnight. when I dosing alk on midnight, the ph jump from 7.85 to 8.45, is it bad for my clownfish and future corals? what is the safe range I can raise with alk dosing. thanks a lot!


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Hudson Valley
I would hold off on dosing until you have coral in there. The setup is new, thus the PH swings, so dosing anything is forcing a new system to deal with additional input.