Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 3 of 3

Thread: why is my pH rising

  1. Back To Top    #1

    Join Date
    Jul 2010

    why is my pH rising

    My pH seems to want to be around 7.8. I do not have SWG. Just doing the BBB.
    todays result FC 4, CC 0, pH 7.8 TA 150, CH 360, CYA 70.

    I added 1 gal of chlorine and 1q 2cups of MA. I added a similar amount of MA last week. Chlorine use is about 3q a day.

    I do have a nice waterfall that we turn on while swimming, could that be increasing my pH? I have had the pool for about 3 months now but recently have seen an increase in pH.
    17,000 gal in ground with spa, wet edge surface, Paramount PCC 2000 in-floor cleaner,Pentair Clean and Clear Plus 520 Cartridge filter, 3 hp Pentair Intelliflo VS SVRS pump , waterfall with 1 1/2 hp booster, Del ozone Eclipse1 ozonator, puck feeder. Borates added 8/2/2010

  2. Back To Top    #2
    svenpup's Avatar
    Join Date
    Nov 2009
    Sacramento, CA

    Re: why is my pH rising

    You are on the right track...the aeration from the waterfall along with the high TA is causing the pH rise.

    Lowering the TA down to 70 or so would help, but if the pH hangs at 7.8 withought going any higher I wouldn't worry about it.

    Periodic acid addition with BBB is par for the course anyway.
    TFP Method Advanced Intermediate
    • 17,500 gallons - In Ground - Plaster - Hayward Swimclear 3020 Cartridge Filter - Sta-Rite Max-E-Glas Main Pump upgraded with A.O. Smith B2980 E-Plus New Centurion Two-Speed Motor - Polaris 280 Cleaner with Polaris PB4-60 Booster Pump - TightWatt2 Timer - Taylor K-2006 Test Kit - Pool Pilot Digital Nano SWCG

    Helpful Links: Pool School, BBB for Beginners, How to Shock ('s a process not a product), Chlorine/CYA Chart, Jason's Pool Calculator

  3. Back To Top    #3

    Join Date
    Jul 2010
    northern California

    Re: why is my pH rising

    I have the same problem. My test results are:
    FC 6 (I keep it at 6)
    CC 0
    pH 7.6 to 7.8
    TA 80 (was 120 and 100)
    CH 340
    CYA 40

    I have been adding about 1 quart and 2 cups of MA everyday and 10% chlorine at about the same amount. I lose about 1.5 to 2ppm chlorine per day. I can understand why I have to add chlorine everyday but MA? Did someone say that lower TA will stabalize pH? Now that TA is lower, maybe ph will not keep going up everyday.
    IG pebbletec pool: size of pool: 27,000 gal; filter: cartridge - Hayward Superstar Clear; pump size: 1.5 HP; TF 100 Test kit - got it on 7-29-10; The Pool Cleaner-4-wheel suction model; Pool calculator:; bleach calc:

Posting Permissions

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