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Thread: Scale inhibitor?

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    Join Date
    Jul 2015
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    Marietta, Ga
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    Scale inhibitor?

    Am I correct that TFP DOES not recommend adding scale inhibitor monthly, unless your water has VERY HIGH calcium levels? Thank You!
    FC. 6
    CC. 0
    PH 7.6
    TA 85
    CH 140
    CYA 50
    20K, IG, new Merlin vinyl liner, sand, Triton Tr-60, Eco-Pump EP-6, 1.5hp, Taylor TF-100
    Test kit, city water, built in 1979.

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    JoyfulNoise's Avatar
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    Re: Scale inhibitor?

    You have a vinyl pool and your water's CSI (assuming 3400ppm salt and 75F) is -0.56. There is no danger of calcium scale developing at all in your pool. There is a trend among GA pool owners to have issues with iron in their water (either from municipal supplies or blown in from iron-rich Georgia soil) so a scale inhibitor would help to keep iron staining to a minimum. However, if you have never had any problems with iron in your water then there's also no need to use a scale inhibitor.
    Matt
    16k IG PebbleTec pool, 650gal spa, spillway and waterfall, 3HP IntelliFlo VS / 1.5HP WhisperFlo, Pentair QuadDE-100 filter, IC40 SWCG, MasterTemp 400k BTU/hr NG heater, KreepyKrauly suction-side cleaner Dolphin S300i robot, EasyTouch controls, city water, K-1001, K-2006 and K-1766 test kits, Mannitol test for borates

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    duraleigh's Avatar
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    Re: Scale inhibitor?

    I certainly would not add anything with those good numbers. In fact, your CH should probably come up a little to about 250. It will probably do so on it's own or you can hurry it along by adding some. Keep your pH where it is and you should never have a scale issue.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Mod Squad pooldv's Avatar
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    Re: Scale inhibitor?

    That is not to say though that calcium scale can't develop in a vinyl pool with elevated CSI. No, we do not recommend using a scale inhibitor to avoid scale, we recommend keeping your water balance to avoid scale. More here, Pool School - Calcium Scaling
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    Join Date
    Jul 2015
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    Marietta, Ga
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    Re: Scale inhibitor?

    Thank ya"'ll for your input! Just saved another $29.95. Life is beautiful!!
    20K, IG, new Merlin vinyl liner, sand, Triton Tr-60, Eco-Pump EP-6, 1.5hp, Taylor TF-100
    Test kit, city water, built in 1979.

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