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Thread: When to shock

  1. Back To Top    #1

    Join Date
    May 2010
    Lehigh Valley, Pennsylvania

    When to shock

    Newb having my first pool party this weekend. Wondering when to shock. I've read after a "heavy swimload", but wondering what is considered "heavy". Should I shock after a pool party?

    25K gal vinyl inground, 1HP Hayward Pump, Hayward DE 4820 Filter

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: When to shock

    I would raise the FC level a little extra before the party. After the party, if the FC level went to zero I would shock, but hopefully the FC level won't go to zero and simply adding a little extra chlorine will take care of things.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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  3. Back To Top    #3
    Butterfly's Avatar
    Join Date
    May 2007
    South Carolina

    Re: When to shock

    It certainally will not hurt anything to shock after a pool party.

    I recommend that you raise your FC to high target for your CYA level prior to the party.

    You can test during the party (if it lasts for quite a while) and adjust if needed.

    And test pH & FC after the party and make necessary adjustments.

    There are so many variables for the definition of "heavy swimload" - I'll leave that to someone else.
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