I've tried to maintain an active Ph of 7.4-7.6 but it rises daily about 0.4Ph.
I live in Phoenix and have metal stains that I'm currently working on. This is due to neglect from previous pool service and myself. I've been onboard with the TFP program for about 5 or 6 months now and test my pool almost daily. I recently added the borates hoping to stabilize this but it seems the same amount of chlorine and acid are needed as before. After adding all the Borax and Acid I was steady at 7.4Ph for two days. I then rechecked it on the third day and it was at 8.0Ph.
Is it possible it's just the water? It's barely drinkable down here and I obviously have some copper coming in as well.