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Thread: when to shock

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    when to shock

    do i need to shock on a regular basis if test numbers are right and no other problems?
    24 ft. 52 in. deep above ground
    hayward sand filter
    new pool owner/new bbb believer

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    Butterfly's Avatar
    Join Date
    May 2007
    South Carolina

    Re: when to shock


    Pool School, link at top right (big white button) has all the info

    Here is the first paragraph from "How to Shock your Pool" from Pool School.

    Shocking the pool will eliminate algae, combined chlorine (CC), and any other organic contamination. If you have algae, or the (CC) level is above 0.5, or the free chlorine (FC) level is zero, you should shock the pool. Many people also like to shock the pool when the FC level falls significantly, as it often does after a major storm or large swim party. This is done even if FC doesn't get all the way to zero, just to be sure everything is all right. If you are maintaining proper FC levels there is no need to shock weekly, or on any other regular schedule.
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    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

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