Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 4 of 4

Thread: Ph level frozen 7.2<Ph<7.4

  1. Back To Top    #1

    Ph level frozen 7.2<Ph<7.4

    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.

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: Ph level frozen 7.2<Ph<7.4

    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.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  3. Back To Top    #3

    Re: Ph level frozen 7.2<Ph<7.4

    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.

  4. Back To Top    #4

    Re: Ph level frozen 7.2<Ph<7.4

    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.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts