Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 7 of 7

Thread: PH issues

  1. Back To Top    #1

    Join Date
    May 2015
    Location
    Pleasant Gap Pa
    Posts
    47

    PH issues

    Good morning, it's been a while since I've been here bc my pool has been a joy to take care of and swim in since I found you guys and all has been well until now....I'm having a hard time getting my PH to stay around 7.4/7.6. My current readings are

    FC 4
    CC 0
    PH 8+
    TA 130
    CYA 40

    last week end I added the recommended amount of muriatic acid and the water dropped to 7.4 over night and stayed there for all of 1 day. Today it is back up over 8 and I'm wondering what the heck to do. Not sure what is causing it to raise all of a sudden. I bought the muriatic acid at Walmart it was called Kleen Green I'm wondering if I need to go to Home Depot or Lowes to get a different kind.
    26700 gal IG vinyl lined pool. Clean and Clear 100 sq ft cartridge system, 1 hp Pentair SuperFlo pump

  2. Back To Top    #2
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: PH issues

    You just have high TA pushing the pH up. If you have a lot of aeration - and that includes swimmers splashing around - pH is going to go up. Add more acid to take pH down to 7.2. That will also lower TA some, which will slow the pH rise and maybe get you a few more days before pH climbs out of range.

    Either you added Baking Soda or your refill water has high TA, that's why it just started happening.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  3. Back To Top    #3

    Join Date
    Jun 2015
    Location
    Washington/DC
    Posts
    25

    Re: PH issues

    Does the label list the strength of the acid on it and did you plug the right amount into pool math. I buy my muriatic acid at the pool store as the bottles at the hardware stores near me are not labeled with the strength. I've read mixed thoughts on Kleen Green so just avoid it altogether.

    Perhaps lower your your TA a bit and raise your FC slightly given your CYA of 40. I found once I got my my TA and FC in the right place I had less issues with my pH creeping up as quickly.

  4. Back To Top    #4
    Mod Squad woodyp's Avatar
    Join Date
    Apr 2010
    Location
    East Texas
    Posts
    9,004

    Re: PH issues

    What is the PH and TA of your fill water?
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
    2 Speed Hayward Power-Flo Matrix 85 g.p.m. 22" 250lb. sand filter hard plumbed
    Pool Rover Jr., Pool Blaster Max, Diver Dave TF100 Test Kit/Speed Stir
    Margaritaville Frozen Concoction Maker, Liqour Chiller, & Drink Mixer & Party Tub----Collect 'um all!

  5. Back To Top    #5
    Mod Squad kimkats's Avatar
    Join Date
    Jul 2012
    Location
    Tallahassee, FL
    Posts
    26,739

    Re: PH issues

    What you might need to do is get your TA down. How you do that is push your PH down to 7.2 and then use your returns and such to get the PH back up to push it back down to 7.2 until you get your TA down to 80.

    Once you get your TA down to 80 you will have to play with it to see what YOUR pool likes. Mine likes my TA at around 70 to keep my PH happy. Some likes the TA at 100 and some 50. It will take a little time and working on it to find it but once you do it should all find their happy spot and stick.

    Of course here is a link to it........

    Pool School - Lower Total Alkalinity

    Kim
    TFP Moderator 33x52 round AG 25,600 gals Sand Filter 1.5hp Pump - 2 Speed, SLAM, Pool School, Recommended Levels, Recommended Chemicals, Pool Math, Chlorine/CYA Chart, TF-100 Test Kit

  6. Back To Top    #6

    Join Date
    May 2015
    Location
    Pleasant Gap Pa
    Posts
    47

    Re: PH issues

    Thank you all. I do have a squished out pump lid o-ring and I ordered but it hadn't arrived yet so I do have some air flowing back to the pool thru the jets and with the nice weather we have now I have grandbabies in the pool most everyday so lots of splashing. As far as the Kleen Green there is nothing on the label explaining what your buying that should have been my first clue that maybe something else would have been more useful. So I'll start the process of reducing TA and PH tonight. It's hot already and I know the pool will be in full use today again and I don't like adding muriatic acid if anyone will be swimming in a few hours. I haven't added water in awhile but I'll test my water source for TA and PH before I add more. You all have been most helpful.
    26700 gal IG vinyl lined pool. Clean and Clear 100 sq ft cartridge system, 1 hp Pentair SuperFlo pump

  7. Back To Top    #7
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    23,999

    Re: PH issues

    With the pump running and adding muriatic acid in front of a return the acid is diluted immediately and is no risk at all in less than a minute. There is no need to worry about that. We recommend waiting 30 min to retest just to make sure all of the pool water is mixed.
    TFP Moderator
    If TFP helped you or saved you money - Become a TFP Supporter! <--Click here
    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

Posting Permissions

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