pH keeps drifting over 8

Skitch

Well-known member
May 11, 2015
114
Athens, Georgia
For the past couple of weeks, my pH keeps drifting back up over 8 no matter what I have tried.

Muriatic acid added according to Pool Math, then I thought maybe my MA was no good(?) so I added the appropriate amount of dry acid. Testing around 7.5 after I add acid, but in a few days it's back up to 8+.

Any ideas?
 

JohnT

Admin
Mod Squad
TFP Expert
Apr 4, 2007
9,624
SW Indiana
Not out of the ordinary. Keep pushing it down. Odds are your TA is high. Get your pH down around 7.2 on a regular basis.
 

moore887

Gold Supporter
Silver Supporter
In The Industry
Aug 14, 2018
221
CAPE CORAL
Hi Skitch,

What's your total alkalinity at? With my saltwater pool and newer plaster I have constant upwards pH drift. It's just a fact of life that I add a few cupfuls of acid every week. Borates could relax the demand slightly but I haven't bothered. I would actually like one of those fancy auto feeders for the acid!
 

Skitch

Well-known member
May 11, 2015
114
Athens, Georgia
Just tested my TA and it's around 60.

Testing over 8 again on pH. Not sure what to try. The last couple of seasons my pool has stayed at 7.7 without ever adding anything.