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Thread: Pool Shock Temperature

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    Join Date
    Jun 2008
    Location
    Chicago, IL
    Posts
    2

    Pool Shock Temperature

    What is the optimum temperature to shock a pool?

    Just opening pool.
    Water temperature: 57 deg
    Outside air: 40/65
    FC .1
    CC 5.2
    TC 5.3
    pH 7.2

    Should I heat pool before shocking?
    Thanks!
    32,000 gal 20x 40 pool Chicago,IL
    Pool closed From October thru May.
    Sand filter (changed July 2006)
    Natural Gas pool water heater
    Automatic chlorinator with 3” trichlor pucks. Phos Free – 2 cups a week

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    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    30,077

    Re: Pool Shock Temperature

    You can shock now. The process may go just a bit slower but not enough to warrant the money to heat the pool.

    You sure have a hefty CC's test result. How does your water look? Do you know your CYA level to get to the appropriate shock value?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  3. Back To Top    #3

    Join Date
    Jun 2008
    Location
    Chicago, IL
    Posts
    2

    Re: Pool Shock Temperature

    Thanks for the reply.

    Pool is the usual cloudy blue. I don't know the CYA numbers. From past years experience I have found that 12gallons of pool shock will clear out the CC to 0.
    I pour the 12 gallons jugs into several 5 gallon buckets and then quickly dump it into the pool. Always do it after sunset. I've had good luck with this system, the pool shock will lower the pH so increaser is always needed.
    32,000 gal 20x 40 pool Chicago,IL
    Pool closed From October thru May.
    Sand filter (changed July 2006)
    Natural Gas pool water heater
    Automatic chlorinator with 3” trichlor pucks. Phos Free – 2 cups a week

  4. Back To Top    #4
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Pool Shock Temperature

    The amount of chlorine you actually need to use is highly dependent on your CYA level. It is well worth finding out what your CYA level is.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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