Since opening the pool this year I need to add muriatic acid weekly (about 1 to 2 quarts) to keep the pH at 7.2-7.4 range or else it tends to gravitate to 7.8-7.9. I don't recall adding this much acid last year. My current numbers are:

FC 3.0
CC 0
pH 7.4 (after adding HCl today)
TA 70
CYA 30
CH 40

Inground vinyl 24,000 gallons

My question is would increasing the TA to around 100 or adding a second buffer like borates to about 50 help stabilize the shifting pH.


Thanks in advance,

Frank