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Thread: Low PH

  1. Back To Top    #1

    Low PH

    Hey guys,
    Got the pool opened and added a SWG. I read thru the pool school for balancing the water for a swg and am trying to do the steps in order. My CYA was 0 (Although last year it was too high so I dont know where it all went)

    So over the last couple of days I have added CYA and alkalinity up and turned up the swg and my current readings are

    pH - 7.2
    TA - 80
    FC - 5
    TC - 5
    CH - 80
    CYA - I added 6lbs so it should be around 40 but I just added it 2 days ago

    Will my ph go up because of the swg or do i need to add borax and...
    how do I raise the ph without raising the TA

    TIA
    Kevin
    22,00 Gallon IG Vinyl, DE Filter, AutoPilot SWG
    Central CT

  2. Back To Top    #2
    frustratedpoolmom's Avatar
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    Re: Low PH

    It will likely go up on it's own. To raise PH on it's own, you aerate the water. The SWG should achieve this for you.

    How are you testing? Which kit? The FC=5 has me suspicious...

    Assume the CYA is in there, and chlorinate your pool according to the chart, using liquid chlorine. You do not want to use the SWG until the CYA is at the recommended level of 70-80. Once the SWG is operating properly, use the recommended FC levels for SWGs instead.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

  3. Back To Top    #3

    Re: Low PH

    Thanks for the quick reply
    I am using the TF-100

    Should I turn the SWG all the way back down until I get the CYA up?
    It will take a week or so to get an accurate CYA reading after adding it Is that correct??
    22,00 Gallon IG Vinyl, DE Filter, AutoPilot SWG
    Central CT

  4. Back To Top    #4

    Re: Low PH

    Sorry, I hit submit before I finished
    I only used the comparator to check the FC I did not use the powder yet

    Thanks Again

    Kevin
    22,00 Gallon IG Vinyl, DE Filter, AutoPilot SWG
    Central CT

  5. Back To Top    #5
    frustratedpoolmom's Avatar
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    Re: Low PH

    Aha! That makes sense.

    Yes, don't run the SWG yet. It can take about 5-7 days for the CYA to fully register.

    You're welcome Glad to assist.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

  6. Back To Top    #6

    Re: Low PH

    Hi Guys,
    Happy Memorial Day!! and
    Thank You to all of the veterans!!

    Well I got my CYA up but the ph and TA seemed to have dropped. My current levels are

    FC 6 ppm
    PH 7
    TA 60
    CH 80
    CYA 60 although it may not be completley dissolved , I added it on Wed and have been running the pump 24/7
    Salt 3500 ppm

    I pointed the jets upward to try and aerate but the water is just barely breaking the surface, I turned off my swg after my last post but will turn it back on now that the cya is higher. The pool is crystal clear, am just worried about the ph.

    My questions are
    1) could my TA have dropped 20ppm in less than 2 weeks?
    2) Will running my swg raise the ph enough by itself or do I need to do something else?
    22,00 Gallon IG Vinyl, DE Filter, AutoPilot SWG
    Central CT

  7. Back To Top    #7
    Casey's Avatar
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    SW PA
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    Re: Low PH

    If you raised your pH by turning your return up to break the surface, you outgassed the TA therefore the TA dropped a bit. To raise your pH, add Borax 20 Mule Team in the laundry isle. To raise your TA, you can add A&H Baking Soda. To do both at the same time, you can add A&H washing soda.
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De Filter

  8. Back To Top    #8
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    Re: Low PH

    Quote Originally Posted by chili
    Sorry, I hit submit before I finished
    I only used the comparator to check the FC I did not use the powder yet

    Thanks Again

    Kevin
    The OTO test with the yellow comparator does not check FC, only TC.

  9. Back To Top    #9
    frustratedpoolmom's Avatar
    Join Date
    May 2007
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    SWSuburban Chicago, IL
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    Re: Low PH

    The CYA lowered both the TA and the PH. I should have accounted for that, my bad. Go ahead and up PH with Borax or Washing Soda and the TA will go up a bit too.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

  10. Back To Top    #10
    Guest

    Re: Low PH

    With a SWG I would leave the TA at 60 and just let the pH rise on it's own!

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