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Thread: Appropriate ppm for cya?

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    Appropriate ppm for cya?

    Surely this has been covered before but what is the desired concentration of CYA in a freshwater pool using bleach? Mine is currently at 20ppm, trying to keep it as low as possible to maximize the effectiveness of the bleach.
    Thanks,
    Joe
    15,500 gal, inground gunite pool with 7 ft spa, 2 speed pump 2hp/.33hp, 3/4 hp booster pump, Intermatic P1353 timer, AutoPilot SC-48, Sand filter with ZeoBest, Heater, that I never use . . .

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    reebok's Avatar
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    Apr 2009
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    16x32 21,000 gallon in-ground exposed aggregate, 1.5hp pump, 120 sqft catridge filter, birdcage, solar panels, aquavac tigershark qc robot.

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    Re: Appropriate ppm for cya?

    Awesome thanks!!
    15,500 gal, inground gunite pool with 7 ft spa, 2 speed pump 2hp/.33hp, 3/4 hp booster pump, Intermatic P1353 timer, AutoPilot SC-48, Sand filter with ZeoBest, Heater, that I never use . . .

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    Guest

    Re: Appropriate ppm for cya?

    around 40 is what works best for the vast majority of outdoor pools. Lower and you go through a lot more bleach because of loss from sunlight.

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