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Thread: Drain pool or top off and shock ?

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    Drain pool or top off and shock ?

    Hi folks - sorry if this is a dumb question but here goes.... we've got an above ground pool 4200 gal (I think) (12x16x4), I drained it last fall intending to purchase a cover before the rains started. Needless to say I did not make it. After it got a few inches in the bottom I was like 'aw forget it'. So now the pool is over a 3rd full or more. I tried (and tried) to siphon off that nasty green water - but gave up getting a stream to flow from my waterhose after a good amount of time trying (and many mouthfulls of that nasty green water - not smart I know).

    I was wondering... could I just top the pool off with fresh water then shock the thing really hard? Would there even be a chance of clearing up this water (and killing the mosquitos that have made a home of it)? thanks. ~ doug
    4,240 gal. vinyl lined, metal framed pool. SWG (Intex Krystal Clear). ZeoSand filtration.

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    Mod Squad tim5055's Avatar
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    Re: Drain pool or top off and shock ?

    We generally recommend that anything less than 5,000 gallons is more cost effective to drain and refill than to clean up. You can avoid the mouthful of algae with a rental sump pump from Home Depot or an inexpensive one from Harbor Freight.

    However you you decide to go, I would recommend doing it and gettin water in that pool. A great deal of the stability in a an AG pool is the water pressure,pushing out on the liner.
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