My pool has been open since late April. No one has been in it yet, still waiting for it to warm up. Temp at ~74 now.
I tested my water a few weeks ago and the pH was 7.5 . Bromine levels have been fine (Have brominator). I tested the pH a couple days ago and it was low, 7.1/7.2ish. We have had a lot of rain lately. Would that be the cause of the low pH? I try to get the cover off and vac at least once a week to keep it clean. I bought a box of borax, but I think I'll need 2 to get it back to 7.5 range.