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Thread: Closing after drain and partial refill

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    tschaefges's Avatar
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    Jun 2008
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    Closing after drain and partial refill

    I normally use the Pool School instructions for closing my above ground pool. This year, however, I will have to fully drain the pool within the next couple of weeks in order to make repairs to some of the metal parts. My plan has been to drain the pool, make the repairs, then order a tanker of water (9,000 gallons) to partially refill it before putting on the cover and closing for the winter. The water is trucked in from a municipal source, so it's clean and chlorinated.

    My question is how to treat the water before we put the winter cover on. The pump will have been disconnected prior to draining. Should I add chlorine or algaecide during the refill to prepare the water for the winter? Do I have to worry about having 0 CYA before closing? I am in central Illinois and we're expecting daytime temps in the mid 70's and night temps in the low 50's for the rest of the month.
    17' x 29.5' x 4' Splash Superpool AGP, 15,000 gal, Hayward S244T sand filter, Sta-Rite ABG4E-2A4BBB 1hp pump, BBB / TF100 test kit
    East-Central Illinois

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    Mod Squad woodyp's Avatar
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    Re: Closing after drain and partial refill

    It's just as if not more so to have your pool water balanced before closing as it is during the normal season. If it's gonna be covered, I'd get at least 30 ppm CYA in it. I sure wouldn't risk having 9k gallons of trucked in water going bad on me.
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    May 2013
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    Long Island NY
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    Re: Closing after drain and partial refill

    Hooking the pump back up is the way to go. That should be easy.
    19,000 gal - Vinyl IG - Sand filter -1.5hp. - Taylor k 2006 - Loop Loc cover

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    Sep 2016
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    Norman, OK
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    Re: Closing after drain and partial refill

    Is there no way to just not refill it until spring?

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    tschaefges's Avatar
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    Jun 2008
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    Sidney, IL
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    Re: Closing after drain and partial refill

    Is there any way to dissolve the CYA without running the pump? It is a soft-side pool that is not conducive to running the pump at 60% full.
    17' x 29.5' x 4' Splash Superpool AGP, 15,000 gal, Hayward S244T sand filter, Sta-Rite ABG4E-2A4BBB 1hp pump, BBB / TF100 test kit
    East-Central Illinois

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