Since I opened the pool on May 27th it's been a constant battle to get my pH to stay in range. I go by the poolcalculator goals. So far this year I've added 13 cups of muratic acid. The pool has remained nice and clear all year and I've averaged 1 1/2 qts of bleach daily. (low reading today was because I missed testing yesterday and it's been bright and sunny.)
Today's readings--FC 1 (added 3qts 6%0) pH 8.2 maybe higher because the color was ruby red (added 2 cups muratic acid) T/A 80
Last year I had no problems with pH. It was consistent in the 7.3-7.5 range and T/A consistent at 90.
This first half of this summer has been very rainy and I thought that might have had something to do with the high pH. But I think I read somewhere on this sight that rain shouldn't affect pH. And we haven't had rain for a week now anyways and it's still high.