Alk has been a struggle for me lately. My alk after a 10% wc sits high at 12dkh then raises .5dkh per day. I’m stumped. I’m not dosing anything and the tank is light to moderate lps stocking.
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I’m using rodi for top off and not dosing.Alk can rise from nitrate falling or being dosed, or from very slow dissolution of rock and sand, but 0.5 dKH per day seems excessive.
What do you use for evaporation replacement?
Maybe just monitor it longer and see if it wasn’t test error.