Using borax to raise pH

redghill

New member
Jul 30, 2013
3
Collinsville, TX
I want to add borax to my pool but my total alkalinity is high at 170 ppm. Can I add muratic acid to lower the total alkalinity which will also lower the pH and then add the borax to raise the pH back up to 7.4?
 

Texas Splash

Mod Squad
TFP Expert
LifeTime Supporter
Welcome to TFP! :wave: The best way to increase pH without also increasing the TA you just lowered is with good/steady aeration. The instruction on the Lower Total Alkalinity - Trouble Free Pool page will help. Use MA to knock the pH down to about 7.0-7.2, then let the aeration increase the pH to about 7.8, perhaps even 8.0 before hitting it again with acid. You should see a biggest TA drop that way.
 

JamesW

TFP Expert
Mar 2, 2011
17,004
Why do you want to add Borax?

If for borates, use boric acid.

With a TA at 170 there should not be any reason to increase pH.

What's going on?

What are you trying to accomplish?
 

redghill

New member
Jul 30, 2013
3
Collinsville, TX
My thought was if I add acid to lower the TA into the correct range why can’t I then just add the borax to raise the Borate level to 50 ppm and also let it raise the pH at the same time?
 

JamesW

TFP Expert
Mar 2, 2011
17,004
If you drop the TA all at once, the pH will go too low.

There's usually no need to rush lowering the TA. Just lower the pH to 7.2 and the TA will come down over time.

Boric acid is the best way to add borates.