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Thread: CYA level while Winterized?

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    CYA level while Winterized?

    I am dealing with a high CYA this Summer, hovering around 100 - 110. Large replacement of water is not practical because of a low producing well and expense of trucking in water. My questions is, what happens with the CYA level over the Winter when the pool is covered? Would the CYA level be lower, higher, or the same next Summer when opened?
    - Max
    __________________________________
    20k gal, inground vinyl, 1 1/2 HP Hayward SuperPump, HW Veriflow XL Sand Filter, Hayward Aqua Rite T-Cell-9, AquaComfort Heat Pump ACT-1100
    Hayward TigerShark robotic cleaner

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    GreatCanadian's Avatar
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    Re: CYA level while Winterized?

    It will be the same (barring breakdown to ammonia - which isn't likely). The only way to lower that CYA is partial drain and refill.
    13'x22'x52" 8,000 gallon ProSeries Pool with Borates
    Intex 110 pound Sand Filter with Zeobrite, 2650 gph pump, 0.95 hp
    Bestway SWG
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    Re: CYA level while Winterized?

    Well, you don't say if you drain your pool down for winter protection or just cover it.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    GreatCanadian's Avatar
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    Re: CYA level while Winterized?

    I assumed that there was no drainage for winter due to his statement that water replacement is not practical. But perhaps he does drain it a bit for winter. Give a little more info MT !!
    13'x22'x52" 8,000 gallon ProSeries Pool with Borates
    Intex 110 pound Sand Filter with Zeobrite, 2650 gph pump, 0.95 hp
    Bestway SWG
    AquaPro ECO500 50,000 BTU heat pump
    GLI Whirlwind Solar Cover Reel, TF-100 Test Kit

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    Re: CYA level while Winterized?

    I normally only bring the water down to below the skimmer. So not much drainage.
    - Max
    __________________________________
    20k gal, inground vinyl, 1 1/2 HP Hayward SuperPump, HW Veriflow XL Sand Filter, Hayward Aqua Rite T-Cell-9, AquaComfort Heat Pump ACT-1100
    Hayward TigerShark robotic cleaner

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    SkyKid's Avatar
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    Re: CYA level while Winterized?

    I don't know where you live MT
    But if you get a fair amount you could always divert the rainfall into your pool
    It won't add a lot at first but over time I'm sure it would help
    you would be surprised how much water comes off your roof in a moderate rain storm
    14600gal, In-Ground Fiberglass, Haywood s244t Sand Filter, Jandy Apure35 SWG,
    Haywood 2 speed 1hp pump, Haywood Pool Shark, TF-100 Test Kit http://tftestkits.net/
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