So I'm confused. Ph has been running 7.2 to 7.3, it has been real warm the last few days and the pool has seen a heavy bathing load. Today I tested the pool around noon and the ph was its usual self, this afternoon the kids said their eyes were burning some so I checked and the ph was down to 6.8, added borax, enough to get it to 7.5, tested one hour after and it was around 7.5. kids went swimming I re-tested tonite and now its 7.8.
Wondering what would cause this bouncing, could it be the pool warming up, use of solar cover, bathing load, or is the increase to 7.8 due to aeration right b4 testing??