OK...since switching to liquid chlorihe and getting rid of pucks, my PH tends to drift up and I add acid 2-4 times a week to lower PH (7.8 to 7.4). I have been letting TA come down to rec levels for using chlorine (70-90+) and it is about 80 or so (down from 110).
My issue is the two below statments from pool school:
1) Total alkalinity indicates the water's ability to buffer PH changes. Buffering means you need to use a larger quantity of a chemical to change the PH. At low TA levels, the PH tends to swing around wildly. At high TA levels, the PH tends to drift up.
2) There are two reasons to lower your total alkalinity (TA) right away, because you want to slow down the rate that the PH rises,
They seem to contradict themselves so I thought I'd ask. Statement 1 says a lower TA will make my PH swings worse/wild. Statement 2 says lower TA makes PH rate/swings slower?
I'm looking for my PH "drift up" from 7.4 to 7.8 to take longer. So do I need a higher TA (rasie with baking soda) or a lower TA...let it drift down to find happy spot?