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Thread: Bubbles covering the pool with foam when vacuuming.

  1. Back To Top    #1

    Join Date
    Sep 2015
    Oregon City/Oregon

    Question Bubbles covering the pool with foam when vacuuming.

    My 1 hp Hayward pump is leaking at the impeller. Filter catcher off of the pump is full of water when running. When the vacuum is attached the catcher has a lot of air in it and air begins coming through the intake into the pool. It is covered with white foam within 30 minutes. Pressure seems fine. Any thoughts? Thanks so much! John
    10,000 above ground, roof mounted solar, 1 hp Hayward pump, Hayward sand filter.

  2. Back To Top    #2
    Mod Squad JVTrain's Avatar
    Join Date
    Feb 2014
    Central Minnesota

    Re: Bubbles covering the pool with foam when vacuuming.

    Welcome to TFP!

    By filter catcher, I believe you are referring to the pump basket area, just so we're speaking the same language. And when you attach the vacuum, your having air bubbles coming out of the return jets back into the pool?

    How do you know the pump is leaking at the impeller?

    My thoughts would be that you're getting air from your vacuum head or vacuum hose. The alternative is that if you're only pulling suction from the vacuum head, you have a suction side leak or as you have said, a leak in the impeller or pump seal that is pulling in air with the decreased suction side pressure when only using the vacuum head.

    Just an air leak would not cause the intense, persistent bubbling over your whole pool surface. The only way you'd have this foaming is if there were a chemistry problem, such as very low calcium hardness (CH) or if you had introduced a detergent or surfactant into the pool. This can happen from some products designed to be used in pools (but usually don't need to be used) or from using an outdoor or splashless bleach, which both contain surfactants. Have you added any clarifiers, algaecides or splash-less bleach to the pool recently? Be specific about products if you have.

    Also, a complete set of test results would certainly help. Do you have a test kit to use at home?
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
    40x20 Pool: 32K Gallons * Vinyl * Bleach Chlorination * Hayward S270T Sand Filter * Pentair SuperFlo 1 HP * Teledyne/Laars Heater * AquaVac Tigershark * TF-100 w/ SpeedStir
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