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Thread: Is my Pool Supply Store honest with me?

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    Join Date
    Jul 2008
    Location
    Flintstone, GA USA
    Posts
    112

    Is my Pool Supply Store honest with me?

    My Pool Supply Store told me I needed to add 17 lbs of Calcium to my inground pool. My pool is fiberglass sides with concrete / plastered
    bottom.

    I asked her why and told her that I have never in 37 years added Calcium to my pool. She said that it would keep my vinyl liner from cracking. I told her that I did not have a liner pool. Then another person there told her that I did not need it in my pool since I said I never added it before.

    My pool is 18 x 36 3 ft to 9 1/2 feet.

    Do I need it and if so why?

    I have your Trouble Free Pool testing kit. How do I test it myself for calcium level?

    She said everything else in my pool was fine.

    Thanks
    Tom
    Tom

    18 x 36 Grecian Polynesian Fiberglass Walls with Concrete bottom - 3 ft to 9 1/2 ft. deep -
    Hayward Variable Speed Super Pump SP2600VS 1 1/2 True HP,Hayward sand filter S200, and Hayward auto clorinator. Hayward 250,000 natural gas heater. PoolKeeper automatic water leveler. Loop Loc Ultra Solid Safety Cover. Hayward Color Logic 12 volt light. Dual Pool Deck Jets.
    Polaris 380 auto cleaner. Trouble Free Test Kit TF-100.

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    JasonLion's Avatar
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    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Is my Pool Supply Store honest with me?

    If part of your pool exposed to the water is plaster, then yes you need some calcium in the water. Otherwise the water will etch calcium out of the plaster, shortening it's lifetime and making the surface rough.

    If you have a vinyl liner there is no point in adding calcium. Though apparently that does not apply here.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    In the Industry

    duraleigh's Avatar
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    Apr 2007
    Location
    Sebring, Florida
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    30,078

    Re: Is my Pool Supply Store honest with me?

    I have your Trouble Free Pool testing kit. How do I test it myself for calcium level?
    Go to the laminated instruction card and follow the directions for "calcium hardness test"
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  4. Back To Top    #4

    Join Date
    Jul 2008
    Location
    Flintstone, GA USA
    Posts
    112

    Re: Is my Pool Supply Store honest with me?

    Quote Originally Posted by JasonLion View Post
    If part of your pool exposed to the water is plaster, then yes you need some calcium in the water. Otherwise the water will etch calcium out of the plaster, shortening it's lifetime and making the surface rough.

    If you have a vinyl liner there is no point in adding calcium. Though apparently that does not apply here.
    Thanks to both of you for your answer. I will check my calcium hardness and correct the calcium if the test shows that I need it.

    I think I do because my bottom was just done 2 years ago and it is getting rough feeling, in fact my grandchildren scratched their toes on the bottom today.
    Tom

    18 x 36 Grecian Polynesian Fiberglass Walls with Concrete bottom - 3 ft to 9 1/2 ft. deep -
    Hayward Variable Speed Super Pump SP2600VS 1 1/2 True HP,Hayward sand filter S200, and Hayward auto clorinator. Hayward 250,000 natural gas heater. PoolKeeper automatic water leveler. Loop Loc Ultra Solid Safety Cover. Hayward Color Logic 12 volt light. Dual Pool Deck Jets.
    Polaris 380 auto cleaner. Trouble Free Test Kit TF-100.

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