High TA Normal ph

DIYLinerPool

Well-known member
Sep 28, 2020
72
Chicago (West Suburbs), IL
Pool Size
16000
Surface
Vinyl
Chlorine
Liquid Chlorine
Hi guys. My fill water has high alkalinity that creeps back up after I add enough water back. Currently it is at 250 (I added a good amount of fill water when I opened back up my pool this year) My pH is pretty steady around 7.5. Do I have to stress about getting the TA down instantly or just lower the pH when it creeps up and just let it fall over time? I had it down to like 130 last year before I discovered this website and took my water to Leslie’s and they told me I NEEDED to buy like 150 lbs of dry acid to get the TA down.

Thanks for the help!
 

IceShadow

Gold Supporter
TFP Guide
Jun 8, 2019
3,822
Milwaukee, WI
Pool Size
20000
Surface
Vinyl
Chlorine
Liquid Chlorine
What is your CSI? Unless that’s high I don’t see a reason to force TA lower, especially if your pH is stable.

I’m sure Leslie’s would love to sell you some chems to lower your TA, and then more chems to raise the pH when that goes down too.
 

DIYLinerPool

Well-known member
Sep 28, 2020
72
Chicago (West Suburbs), IL
Pool Size
16000
Surface
Vinyl
Chlorine
Liquid Chlorine
What is your CSI? Unless that’s high I don’t see a reason to force TA lower, especially if your pH is stable.

I’m sure Leslie’s would love to sell you some chems to lower your TA, and then more chems to raise the pH when that goes down too.
Pool math is showing CSI at like .76. My CH is really high in my fill water as well.
 

IceShadow

Gold Supporter
TFP Guide
Jun 8, 2019
3,822
Milwaukee, WI
Pool Size
20000
Surface
Vinyl
Chlorine
Liquid Chlorine
At higher CSI you start worrying about scale in the heater and on the pool surface. I think that’s more about CSI over 1.0, though. Still, you might run the pH closer to 7.2 and try to keep it there to keep the CSI down.