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Thread: OLCT test

  1. Back To Top    #1

    OLCT test

    If the olct test is 0.5ppm , cc at 0.0 but water is still a little cloudy ( sand filter) can I stop shocking. Really
    sunny this last week and burning through a lot of bleach (6 to 8 liter/day)

  2. Back To Top    #2

    Join Date
    Jun 2012
    Howell, NJ

    Re: OLCT test

    The shock process is finished when:
    1) CC of .5 or less
    2) OCLT of 1 ppm or less
    3) Pool is clear.
    So no, you should keep shocking. Have you tried adding DE to your sand filter? There is a link in pool school somewhere.
    7 year old ~13,500 gal 24' AGP with 1.5 hp Proline pump, 150 sqft Pleatco cartridge, filled with well water with pH of about 4.5.
    Wanda the Whale pool vacuum, home made heater, Taylor K-2006
    Cloudy Pool? 1) Order test kit. 2) Follow SLAM
    New to TFPC? Read Pool School a few times, then post questions. PoolMath will help with chemical additions.

  3. Back To Top    #3
    Butterfly's Avatar
    Join Date
    May 2007
    South Carolina

    Re: OLCT test

    ^^^what John said^^^

    and, what is the CYA level?

    It would be helpful if you add your pool and equipment info in your sig.
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    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.

    ~ One should not use a sledge hammer to swat a mosquito. ~

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  4. Back To Top    #4

    Re: OLCT test

    cya level is 30. I'm impatient. Losing 1/2 to 2/3 chlorine to the sun just hurts. Thanks for the encouragement, I will to continue to shock. When I think about it, the pool has come a long way from a thick, smelly swamp to partially cloudy in 9 days. Yes I'm also using DE when I'm home for a few hours. Thanks to everyone who contributes on this site.

  5. Back To Top    #5

    Join Date
    Feb 2008
    Flower Mound, TX

    Re: OLCT test

    Just be sure that you are running your pump 24/7 during the process. Filter time cannot be underestimated in this process. You're doing good!
    10K gallon IG gunite with waterfall; Pentair CC320P filter; WhisperFlo 2 HP pump
    TF Test Kits - Pool Math - Pool School
    "It depends."- JohnT

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