TA high, Ph low! How can I fix this?

[aylad]

In addition to what Watermom requested, check the chlorinator and make sure that you still have tabs in the chlorinator--it's easy to forget that you have to refill it occasionally-until you start having water problems

Janet

[waterbear]

The tabs are very acidic so they may be making the pH drop lower than normal. However, a pH of 7.2 certainly isn't low. It is within acceptable range. You just dont want it to drop any lower. With a TA of 140 ppm it probably won't (don't use strips to test pH or TA, Not accurate at all!)

[waterbear]

Since TA effects chlorine stability and ph, I really need some help with this.

TA has no effect on chlorine stability, btw. CYA levels do and if CYA is present then the effects of pH on chlorine's activity become moot.
TA does affect pH but most people misunderstand how it works. The higher the TA the faster the pH will rise from outgassing of CO2 so if you are using tabs a higher TA is often desirable (and close monitoring of TA but not with strips to prevent it dropping too low, usually no lower than 100 ppm). Lower TA will slow the outgassing of CO2 and subsequent pH rise so if you are using a neutral (upon usage) form of chlorine like bleach or cal hypo a lower TA will help minimize pH rise.