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Thread: pH rising too fast

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    dtrujillo63's Avatar
    Join Date
    Feb 2015
    Los Angeles

    pH rising too fast

    My pool is just over a year old and has always had a high acid demand, adding acid every other day would keep my pH balanced. I recently installed a SWG (IC40) and now I have to add acid everyday. I bring the pH level down to 7.2 and 36 hours later my pH will be 8.0+ (off the scale). Here are my readings, is there anything I can do to slow down the pH rising so fast?

    FC: 6.0
    CC: 0.0
    pH: 7.4
    TA: 60
    CH: 700-800 (I have really hard water in my area)
    CYA: 50
    SALT: 3800
    30 x 20 IG Play Pool + 7' Spa ~16K Gallons, French Gray Plaster, Pentair Intelliflow VS, Pentair CCP420, Pentair MasterTemp 400K Heater, Intellibrite LEDs.

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    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    DFW, TX

    Re: pH rising too fast

    A few things to try.
    Let your TA drop to 50 and see how that does.
    Don't run, or run less, any waterfalls or bubblers.
    Add borates, Borates - Why and How
    TFP Moderator
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    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

  3. Back To Top    #3

    Join Date
    Jun 2015
    Orange County, CA

    Re: pH rising too fast

    I have a SWG and tons of aeration. I would also have to add acid every couple of days and it was a hassle. I installed an IntellipH and best decision ever! Now my pH is rock solid at 7.7 and IntellipH doses every hour when SWG is on. IntellipH is only a duty cycle system but that's all you need for pH control. I don't see automation in your signature, so IntellipH will also give you the ability to control your SWG in 1% increments vs 20%. Pretty easy to self install (if I can do it, anyone can do it), and plug and play with intellichlor. Here's a link to my thread when I was looking to install an IntellipH:

    Pentair IntellipH?

    good luck!
    17k IG plaster pool+ spa, Stonescape mini-pebble midnight blue, marble coping, Trex and porcelain tile decking, Pentair Intelliflo VSP x 3 (filter, laminars and spa jets), Pentair IC40, Pentair MasterTemp 400, Pentair Quad DE 100, Pentair CC 150 for laminars, Intellibrite 5G LEDs, MagicStream Laminars x 3, Intellitouch i9+3 automation with Screenlogic2, IntellipH, Dolphin s300i, TFTest kit, SpeedStir

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