Low pH; high TA


LifeTime Supporter
Jun 3, 2010
Hi All,

This is Day 2 of trying to adjust the pool balance; yesterday I added stabilizer so that I could get the chlorine at a good, more or less stable level. Thankfully, this morning, FC was at 3.5 and CYA at 38. But my concern now is a combination of low pH and high TA. Here are the numbers:

FC: 3.5
CC: .5
TC: 3
pH: 7.0
TA: 175
CH: 230
CYA: 38
Temp: 78F

I've read on Pool School about aeration, but it also seems to suggest that with a high TA, the pH level will also tend to rise (on its own?). Can anyone suggest a good way to get the pH up to norm, and the TA down?



Mod Squad
TFP Expert
Apr 4, 2007
SW Indiana
Aerate. Get in and splash around, aim the returns toward the surface, or install a return fountain. Or just wait.

Melt In The Sun

TFP Expert
LifeTime Supporter
Oct 29, 2009
Tucson, AZ
pH will rise on its own; aeration will speed up that process. Your TA isn't too bad, so if your pH doesn't rise annoyingly fast, you may be happy just adding acid whenever it gets high; TA will gradually go down this way.