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Thread: Maintaining Acid Level

  1. Back To Top    #1

    Join Date
    Feb 2012
    La Quinta, CA (near Palm Springs)

    Maintaining Acid Level

    These are my current readings using the Taylor K2006 test kit:

    FC - 3.2
    CC - 0
    pH - 7.5
    TA - 80
    CH - 250
    CYA - 48
    Salt - 3500
    Water Temp - 84
    Air Temp - 100+
    See equipment specs in signature block

    I have to add 8 to 16 oz of muriatic acid every day to maintain the pH at about 7.5. It tends to go to 7.7 very quickly. The pool is 11 months old and has a PebbleTec surface and a spa spillway into the pool. I get minor scaling on the tile but brush it 2-3 times a week.

    Is this normal to have to add this amount of acid this frequently?
    14,000 gallon outdoor in-ground plaster pool (PebbleTec); Jandy 2HP 2 speed pump; Jandy AquaLink RS Power Center; Jandy Model 1400 SWG (1.25 lb/24 hr chlorine); Jandy CV580 cartridge filter (580 sq ft), 150 gpm flow rate; Zodiac 400,000 BTU gas fired heater.

  2. Back To Top    #2
    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    SouthWest Alabama

    Re: Maintaining Acid Level

    That's not out of the ordinary to have to add that much acid. You could let the TA come down a bit and see if that helps.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

  3. Back To Top    #3

    In the Industry
    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: Maintaining Acid Level

    Is this normal to have to add this amount of acid this frequently?
    That's quite a bit for the age of your pool but the issue is you really have no choice. That you are seeing some scaling indicates the pH has been above 7.5 before so I would suggest you take it down to 7.2 and see how long it takes to get to 7.8. The waterfall is making a contribution to the pH rise as well.

    It may be helpful to lower your TA down to around 60. You must do it according to the article in Pool School.

    Regardless of how much acid it takes, I would never let your pool go above 7.8 because of the history of scaling you have experienced.
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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