TA 40....


Bronze Supporter
Jun 25, 2017
Birmingham, AL
Hi there. Here are my numbers and they have stayed consistent for a couple of weeks or so

Cl 4.5
CC 0
TA 40
Ph 7.5
Cya 70
Salt 3000

I will be adding salt but pool math says to add 15 lbs of baking soda. I'm a little scared that will raise my ph too high.

Do I just go with it and add baking soda


Mod Squad
TFP Expert
LifeTime Supporter
May 19, 2010
Tucson, AZ
Baking soda raises the TA. The higher TA can slowly increase the pH.
Often we suggest a TA down to about 50ppm for SWG pools so that the pH does not rise so quickly.
If everything is stable in your pool, then I would just let it ride; since you have a vinyl pool and a low CSI is not a concern.

FYI, what is a pH that is "too high"? I have been keeping mine up around 8 without any issues. Because the lower you put the pH, the faster it wants to rise.