Last night, our pH was 7.2, with TA at about 80. I used the pool calculator and calculated that I needed 32 ounces of soda ash to increase ph to 7.5 and TA by about 9.1.
This morning, I just checked it and our pH is 7.8 and TA 120. I know this seems to still be within parameters, but I am wondering why it went up so much. Don't really want either of them going up anymore, however. We haven't swam, aerated or anything to make the pH climb so much. Last time when I added soda ash at the same numbers, using the calculator, it worked like a charm. (It's always a possibility I calculated the TA incorrectly this time around I guess.)
The pool water looks clear. Just wondering if I should do anything at this point, or leave it be and see where it takes us.