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Thread: AGP, Main drain winterization. Just pour antifreeze down the main?

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    Join Date
    Apr 2015
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    AGP, Main drain winterization. Just pour antifreeze down the main?

    Michigan above ground pool.

    From my understanding, I just poor RV antifreeze down the plumbing the heads to the main drain. Once I start to see antifreeze coming out of both the main drains into the pool water, I simply shut the valve locking in the antifreeze.

    Antifreeze is heavy enough to where it will stay in this main drain and nothing will freeze.

    Does this sound right?
    Michigan - 24'x54" AG, approx 15,000g, 2 center drains, Cartridge filter, Aqua Pro 2hp, 2 speed pump 3.5a@1725w / 10.5a@3450w, AquaCal TropiCal T90 heat pump, Hayward Salt & Swim SWG, Poolskim, Aquabot Rover Jr.

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    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
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    DFW, TX
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    Re: AGP, Main drain winterization. Just pour antifreeze down the main?

    Hi, I don't close my pool or know how. Here is a

    Here is an article from Pool School that should help, Pool School - Closing an In Ground Pool. Looks like it recommends rubber plugs to seal in the antifreeze.
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