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Thread: Gravel/rock sound in pipe

  1. Back To Top    #1

    Join Date
    Aug 2016

    Gravel/rock sound in pipe

    I am having an issue with air bubbles in my pump basket. When I turn my pump on it runs fine with almost no bubbles. After 30 seconds (sometimes a couple minutes) slot of small bubbles start to form and I hear a gravel/rock sound in the pipe coming out of the ground. The poly pipe underground is connected to a 45 elbow. I only have one pipe from my skimmer. I also hear bubbling in the filter.

    What could cause the cavitation/rock/gravel sound in the pipe? I don't seem to be losing water so I'm not sure if there's a leak underground.

  2. Back To Top    #2
    Mod Squad
    Join Date
    Aug 2012
    DFW, TX

    Re: Gravel/rock sound in pipe

    That noise is called cavitation and it is usually caused by a clogged suction line. Been vacuuming or doing something to clog the pipe?

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