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Thread: Required CYA levels for a SWG

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    donaldm823's Avatar
    Join Date
    May 2007
    Cape Coral, FL

    Required CYA levels for a SWG

    I just installed a Autopilot SWG and it appears to be maintaining chlorine just fine (only had it in 2 days). My weekly sample of cyanuric (CYA) today says 35ppm, where as the Autopilot manual says I need 60ppm. Is there any adverse effects on the SWG if I elect to not add additional CYA until next year. My readings indicate the 60ppm level is to give the SWG a chance to generate chlorine faster that the sun depletion, but since it is late in the season and already getting in 70s, I think my chlorine depletion rate is decreasing. I certainly do not want to ruin my new SWG
    Don SW Florida
    10,000 gal in ground concrete pool
    Pentair Cartridge filter, Pentair SWG, Pentair Intelliflow VS pump (11018)
    FAFCO solar panels w/Pentair SolarTouch controller
    using BBB for pool chemistry/Lamotte ColorQ tester for daily testing

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    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida
    hi, Don,

    Essentially, what you are doing with the lower CYA is asking your SWG to work a little harder. Other than that, I would see no harm but I think you could turn down your SWG and extend your cell life if you went with the recommended level of 60ppm.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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