Ph level frozen 7.2<Ph<7.4

dmfabri

New member
May 30, 2012
4
After reviewing topic, "Raising Ph", I suspect borate level > 50ppm. I have used Borax to increase Ph all of last season and the start of this season. I prefer that my Ph be nearer 7.6, but no Ph increaser has been effective - I tried aerating overnight, too. I am not too concerned because all of my chemical levels are balanced and holding and pool is crystal. I read that reducing borate level requires replacing water. Is there a guide on amount of water exchange needed based on borate concentration and pool volume? Thanks in advance for your feedback.

TA = 100
TC = 2
Ph = 7.2
CA = 35

Vinyl pool; 16X32; depths 3.5' to 7.5'; Hayward 200 sand filter fed by skimmer and deep water drain, one return.
 

JasonLion

TFP Expert
Platinum Supporter
LifeTime Supporter
May 7, 2007
37,879
Silver Spring, MD
Welcome to TFP!

How much of what did you add that didn't change the PH perceptibly?

It is also possible that your PH test reagent has gone bad.
 

dmfabri

New member
May 30, 2012
4
I didn't include that pool is about 20K gallons. I had to increase TA and Ph, so I added AH Baking Soda. PH did not move, so I added 8lbs Borax (gradually, this all has taken place over the past 3 weeks.) My TA jumped to 130, so I brought that back with muriatic acid - ph unaffected. I will check the testing reagent and post results. Thanks.
 

dmfabri

New member
May 30, 2012
4
I purchased the K-2006C, alk was a little high, 117 after factoring for 90 CA. I decided to do nothing immediately. After 3 weeks I aerated 2 nights. PH is now 7.6 and has held steady for 2weeks. I am glad that I did not over react.