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Thread: Cloudy After Shock

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    GTGallop's Avatar
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    Aug 2008
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    Cloudy After Shock

    I have a 25,000 gallon in ground concrete / plaster pool. It is an older pool (1998ish) but new to us - we just moved in a few months back. To prepare for the swim season I gave it a good shocking last night. Leslie's recommended 4lbs of Cal-Hypo Shock. I put that in last night at 7:00 PM and now 12 hours later it is cloudy as all heck. Water was crystal clear when I started.

    I'm hoping that time in the sun today (Phoenix AZ 97 deg ambient / 78 deg water temp) will help to clarify but I'm still eager for your opinions and advice. Pool needs to be swim-able for Friday.
    2nd Time Pool Owner - 1998 In Ground, Gunite/Plaster, 24' long x 19' wide x 4.5' deep, 20,000 Gallon, Chlorine, 2 Hp Hayward Ecostar with Sand.
    http://www.troublefreepool.com/my-on...le-t40734.html
    Cave Creek, Arizona

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    JasonLion's Avatar
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    Re: Cloudy After Shock

    Welcome to TFP!

    If the water is clear and the FC level is good there is no need to shock.

    I suspect that you have trigged some calcium clouding. But it is impossible to know without a full set of water test results. Calcium clouding is usually fairly easy to clear up, though it depends somewhat on your levels.
    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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    Mod Squad Bama Rambler's Avatar
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    Re: Cloudy After Shock

    Get a good test kit so you'll be able to test yourself.

    Have you taken a sample to the pool store and had it tested? If so, post the results.

    I suspect, like Jason does, that it's calcium clouding but a set of test results will tell us more.

    Keep the pump running until it clears.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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    Re: Cloudy After Shock

    Why would you add calcium to your pool? Just shock with liquid chlorine!

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    Glendale, CA
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    Re: Cloudy After Shock

    If you dont have a test kit that tests for Calcium have them run one at the pool store. You'll most likely find your CH level is pretty high.

    Honestly I dont know why they sell Cal-Hypo in the southwest. It's just asking for trouble.
    16K Gal Plaster | Compupool SWG | Intelliflow VF | TF-100

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    GTGallop's Avatar
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    Re: Cloudy After Shock

    I figured I owed you guys a follow up and kudos for the advice.

    The water checked out perfect in spec. I meant to save and post the numbers but forgot. I think the print out is in the garage. If so I'll post up later.

    Backwashing and a little clarifier did the trick.
    2nd Time Pool Owner - 1998 In Ground, Gunite/Plaster, 24' long x 19' wide x 4.5' deep, 20,000 Gallon, Chlorine, 2 Hp Hayward Ecostar with Sand.
    http://www.troublefreepool.com/my-on...le-t40734.html
    Cave Creek, Arizona

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