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Thread: is CAL necessary for a pool with a liner?

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    is CAL necessary for a pool with a liner?

    My Cal is at 80ppm. What should the range be? And is it necessary for a pool with a liner?
    18x38 IG
    Appox. 85000litres
    Jacuzzi laser sand filter
    1hp pump
    Municipal water

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    Texas Splash's Avatar
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    Re: is CAL necessary for a pool with a liner?

    From the Recommended Levels Chart (link below): "CH 0-350 (Don't add)"

    (FYI) in case you need it: Copied from a previousr thread: "In a vinyl pool you don't have to worry about low CH only high. The only reason to worry about it would be if you had a piece of equipment that the warranty hinged on the CH being maintained at some level." CH does not stabilize other chemicals and is not needed to make a pool look good. Too low a CH can have a pool have more foaming, but usually it's a spa where this is an issue since there is far more aeration. Around 120-150 ppm CH helps to eliminate foaming in a spa, but is not usually needed in a pool.

    "Calcium is only needed in a pool or spa when one is trying to saturate the water with calcium carbonate -- that is, adjusting pH, TA, CH (and temp and CYA) to have a zero saturation index -- for the purpose of preventing calcium carbonate from dissolving from plaster surfaces and grout between tile. If there is no calcium carbonate in a surface exposed to the water, then there is no need for such calcium carbonate saturation. It's as simple as that."

    Sorry if this info was over-kill.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
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    Re: is CAL necessary for a pool with a liner?

    Ok thx in guess I won't add cal
    18x38 IG
    Appox. 85000litres
    Jacuzzi laser sand filter
    1hp pump
    Municipal water

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