pH Rising Non-Stop

squib

Active member
Apr 2, 2015
40
TX
Have a 15,000-gallon liner pool. Installed a new liner about 3 weeks ago. Since then, I am having to add 1/3 gallon of acid every day to keep the pH below 8.0.

Is this something caused by the new liner--will it settle in over time? Before replacing the liner, I was adding acid about once every 3 weeks.

Current Numbers
Alkalinity = 160
Hardness = 175
Free Chlorine = 2.5

Anyone have any advice? Thanks in advance.
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
33,040
Laughlin, NV
What was the TA of the pool water before you drained and replaced the liner?

Your current TA is high. As you add acid and keep the pH in the 7's, the TA is coming down as long as you do not add high TA fill water or any TA raising chemicals.
 

squib

Active member
Apr 2, 2015
40
TX
Not sure what it was before. I hadn't tested TA in several years. But shouldn't that high TA buffer the pH?
 

squib

Active member
Apr 2, 2015
40
TX
Thanks for the link. I guess I just keep adding acid and hoping that I get to the point I get my TA down a bit and my acid demand decreases.