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Thread: Black Algae

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    Join Date
    Oct 2012
    Madera CA

    Black Algae

    I have drained my pool due to a very high CYA level. I also had a problem with black algae. Is there any way to kill the algae while ive got the pool drained? Should I let it sit empty for a couple days? Scrub with bleach?

    25000 Gallon IG Pebble Tec tr-100c Triton II Commercial Sand Filter Intelliflo 3hp variable Speed Polaris 360 with Booster Pump

  2. Back To Top    #2
    Mod Squad woodyp's Avatar
    Join Date
    Apr 2010
    East Texas

    Re: Black Algae

    We never recommend to FULLY drain an in ground pool in the first place unless it's being refinished/repainted.
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  3. Back To Top    #3
    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: Black Algae

    Black algae is very unusual in a vinyl liner pool. Are you sure you are dealing with black alage?

    Scrubbing the pool with a solution of dilute bleach can help kill algae, but it is generally more work than dealing with the algae when the pool is full.
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