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Thread: Pump basket only half full

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    Join Date
    Mar 2015
    San Francisco

    Pump basket only half full

    I have a carridge filter. Why would the "skimmer" basket on the pump only be half full of water. Everything is clean. Cartridges rinsed. ??????????

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    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Tucson, AZ

    Re: Pump basket only half full

    Welcome to TFP!!!

    The simple answer is that you are sucking in air between the pool (skimmer/floor) and the pump impeller.

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  3. Back To Top    #3
    Richard320's Avatar
    Join Date
    Jan 2010
    San Dimas, CA (LA County)

    Re: Pump basket only half full


    Air in the strainer is caused by a suction side leak. The most common is the Oring on the lid. It needs to be clean, lubricated, and free of cracks. Next most popular is low water level and/or a stuck weir door (skimmer flapper). If you try the search box for suction air leak, you'll find more than you ever wanted to know.
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    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: Pump basket only half full

    A variable speed pump running on a low speed will sometimes do this even without an air leak. If there isn't an air leak, you won't lose prime. If you are losing prime, or running a single speed, or two speed pump, or running a variable speed pump at half speed or higher, there must be an air leak.
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    Kiss4aFrog's Avatar
    Join Date
    May 2013
    Hudson, WI

    Re: Pump basket only half full

    Welcome to the forum Gary
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