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Thread: Seeking Advice on Calcium Build Up

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    Seeking Advice on Calcium Build Up

    Split from seeking-advice-on-calcium-build-up-t60244.html
    Please start your own thread when you have a question or need help! Butterfly

    Please help! I'm new to site and desperate. For the third year now, we have opened our gunnite salt water system pool to massive amounts of scaling. Last year was so bad kids were bloodied each time they went in. Had to drain entire pool, acid wash and diamond buff at a cost of $3,000. Noone seems to have an answer for us. We use professional pool company to open and close pool properly and maintain pool all summer in pristine condition. Just opened pool and same exact issue!! My husband is ready to fill pool in. We have a soft cover and city water. Any advice would be soooo appreciated!

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    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: Seeking Advice on Calcium Build Up

    Calcium scale is almost always the result of allowing your pH to be too high and stay too high. Can your post test results for pH, TA and CH?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Richard320's Avatar
    Join Date
    Jan 2010
    San Dimas, CA (LA County)

    Re: Seeking Advice on Calcium Build Up

    Yep. High pH, high TA, and high CH are a bad combination. If you use Cal-hypo "shock" to chlorinate, it's even worse.

    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!

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    blakeusa's Avatar
    Join Date
    Jul 2010
    Ashford, CT

    Re: Seeking Advice on Calcium Build Up

    Also many fill/ top off their pool from wells and or city water that may contain lots of minerals that add to the scaling.

    Always use at least a filter on your hose for pool top offs and refills.

    And you must be getting PH creep - needs to be managed on a daily basis until it becomes stable.

    Rainwater increases PH as well.

    My friend had a similar problem until I took over his pool and started testing and balancing his water - as well as brushing and cleaning the pool--- and no more well water top offs.
    25k 20x40 Gunite w/ integrated Spa & Caribbean Blue Plaster, Curved Bluestone Coping, Deck Jets
    Pentair Easy Touch/Wireless, Sta-Rite Intellipro SRVS Pump, Intellibrite Lights, & Pentair IC40 Cell, Sta-Rite 450sf Cartridge filter
    Heated from Central Boiler - Outdoor Wood Furnace & Triangle Tube Max Heat Exchanger
    ColorQ Pro

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