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Thread: Chlorine Levels

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    Chlorine Levels

    I have a chlorine pool with vynil liner the base has developed lots of black patches.
    My chlorine level is high and the PH is low how do I reduce the chloine level
    25,000 Gallons IG dark bottom gunite/plaster
    Aqualink System with 1.0 hp pump and DE Filter
    Kreepy Krauly Pool Cleaner

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    Join Date
    May 2007
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    South Central NJ
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    3,192

    Re: Chlorine Levels

    What's the pH, Alk, Free Cl, Total Cl, Calcium and CYA levels?

    A pic of the splotches helps. If they are hi res, a link to a photobucket account (free) will help.

    Scott
    Owner of - PoolGuyNJ LLC
    Expert Pool and Spa Repairs, Renovations, and Augmentation. Helping people decide what is the right gear for meeting their needs. Expectations Set, Expectations Met, No Surprises.

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    Butterfly's Avatar
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    May 2007
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    South Carolina
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    Re: Chlorine Levels

    Hi Richard,

    Yep, as Scott said, we need more info.

    You can go to Pool School to help with the info needed.

    Also remember to add your location (city/state).

    If you do not have one of the Recommended Test Kits, just take the water sample to a pool store for testing for now.
    Without test results, we do not know if your chlorine levels are high or not. It is relative to your CYA levels.

    Lots of folks around here to help you get your pool sparkling and safe.

    Welcome to the forum
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    Join Date
    Jan 2009
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    Re: Chlorine Levels

    Quote Originally Posted by Richard Farmer
    I have a chlorine pool with vynil liner the base has developed lots of black patches.
    My chlorine level is high and the PH is low how do I reduce the chloine level
    Normally the chlorine level will drop over time on its own. How high is "high"?

    A high chlorine level doesn't normally cause staining, that usually means other things are out of balance, which is why Scott and Butterfly were asking about those things.
    --paulr
    BBB "Intermediate Swimmer"
    IG plaster pool 18.5K gal, Hayward Pro-Grid DE filter, 3/4 HP Hydramax II; Polaris 380, 3/4 HP booster
    AG spa 325 gal, probably Sundance of some kind
    Water testing instructions on one page

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    frustratedpoolmom's Avatar
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    May 2007
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    SWSuburban Chicago, IL
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    Re: Chlorine Levels

    Do you routinely use algaecide containing copper?
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

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