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Thread: Green/yellow slime growing under spa cover!

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    Green/yellow slime growing under spa cover!

    Hi,
    I am having no trouble whatsoever with my bromine/bleach system as taught on this forum. The water is fine. It's the spa cover that is the problem.

    Every couple of weeks I notice a patch of slime growing and spreading from a central spot under the spa cover. I just wiped it off the first time. Today, I wiped it off then poured bleach on it.

    Any other tips? Anyone seen anything like this? Strangely, though we've had this spa since 1995, this is the first year that this has happened. BTW this is the second cover I have had, this one is about 6 years old.
    Location: Media, PA (Philadelphia suburb).
    In-ground, 13,000 gallon pool, plaster, built 2008-9.
    Pump Whisper-flow 60 gpm DE filter
    Spa: 2013 Hot Springs/salt generator

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    Join Date
    Feb 2008
    Location
    Denton, TX
    Posts
    5,061

    Re: Green/yellow slime growing under spa cover!

    It sounds like you have done the best thing to handle it. I would even go further to suggest that you take a spray bottle, add a bleach solution to it (10% should be good), and go ahead and mist the underside of the cover once again. Then, I would maybe take it off the spa and let the underside dry out by flipping it upside down in the sun for a couple of days. Then place it back on and see if it reappears.

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    Re: Green/yellow slime growing under spa cover!

    OK, thanks, I will try that.
    Location: Media, PA (Philadelphia suburb).
    In-ground, 13,000 gallon pool, plaster, built 2008-9.
    Pump Whisper-flow 60 gpm DE filter
    Spa: 2013 Hot Springs/salt generator

  4. Back To Top    #4

    Re: Green/yellow slime growing under spa cover!

    Follow-up: since the bleach treatment, no more slime on the spa cover.
    Location: Media, PA (Philadelphia suburb).
    In-ground, 13,000 gallon pool, plaster, built 2008-9.
    Pump Whisper-flow 60 gpm DE filter
    Spa: 2013 Hot Springs/salt generator

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