Hey all. This has been a weird summer in SW Michigan as we have seen a massive amount of heat. So with that, I have been keeping the pool (sitting around 90-92 degrees) open 24 hrs a day. Pool is 18x36 vinyl pool (I always use 30k gallons as basis) and we usually cover when not in use with auto-cover to protect it from Sun, etc.
Anyway to the problem - I have been running into an extremely high PH/TA the later part of June and so far in July, which I haven't really seen before.
Last 3 tests are (FC on two of tests were higher because it was after 15 people were in the pool and I added chlorine to it that morning...FC of 3 was before swim and 9 was next day after addition)
FC 9 3 9
CC 1 .5 0
TC 10 3.5 9
PH 7.5 7.8 8.0
TA 180 200 180
CH 240 240 240
CYA 40 40 40
I hit it with 60oz of Muratic Acid but the PH isn't trending down. I know the TA is high do I just continue hitting with Muratic Acid until both come down to desired results?