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Thread: hth shock & swim

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    hth shock & swim

    What is the chemical used in HTH Shock & Swim? Is it Calcium Chloride, Potassium Monopersulfate or something else?

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    Donldson's Avatar
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    Re: hth shock & swim

    Calcium hypochlorite.

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    Re: hth shock & swim

    Is is the best one to use?

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    Re: hth shock & swim

    For what?
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    Mod Squad jblizzle's Avatar
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    Re: hth shock & swim

    Again, member for 3 years ...
    How much Pool School have you read? Start with these:
    ABCs of Water Chemistry
    Recommended Pool Chemicals
    How to Chlorinate Your Pool
    Jason, TFP Moderator
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    Re: hth shock & swim

    Bottles of unscented bleach is usually the best thing to use. Too much calcium causes scaling, and the other granular products have CYA which, if you get too high, will make your chlorine less effective. Use the PoolMath calculator to determine how much to add to raise FC to desired level.

    What I mean by usually is that if someone has a plaster pool and is low on CH I'd use Cal-Hypo. For any pool low on CYA, I would use granular Dichlor/Trichlor. For a pool that already has properly balanced chemicals, I would only use bleach.
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