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Thread: Bubbles in the return lines

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    Bubbles in the return lines

    I have tiny bubbles coming out of my return outlets. Not a whole lot of bubbles either. Looks a bit like carbonation fizz. My Pentair pump does have three dollar sized bubbles that I can see banging around. I think they have always been there (even before I noticed the fizzies). Is it true that there should be no bubbles showing in the pump strainer window?
    Any tips for tracking down the source of my fizzy bubbles?

    Quote Originally Posted by jblizzle View Post
    You should not see any air in the pump.

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    Join Date
    May 2014
    Current: Singapore Previous: Clayton, Victoria, Australia

    Re: Bubbles in the return lines

    Welcome to TFP!

    You should not see bubbles in the pump strainer window.
    Bubbles in the return/pump are indicative of a suction side leak.

  3. Back To Top    #3
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Tucson, AZ

    Re: Bubbles in the return lines

    Welcome to TFP!

    Please fill out your signature as described in the "read before you post" sticky/article in Pool School.

    Do you have a SWG? They can generate bubbles that make it to the pool, but only when generating.
    Jason, TFP Moderator
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