| Re: pH is 8.43, please help I also notice that my tanks PH gets up to around 4-4.2 with the use of the Kalk by the end of the day but I haven't seen any side effects from it. I know that if it get too high that the cal and alk can precipitate out of solution but I don't think that happens till about 8.5 or so. I have also been wondering if PH of 8.4 is normal for people that are using kalk. |