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Thread: Stains and black algae

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    Stains and black algae

    Had trouble with pool last season, it needed to be drained and water changed. Unfortunately the water sat it the bowl for several weeks till I could get to it. Did an acid wash but the bowl is stained and need to know if there is anything else I can do. I know that it needs to be redone but it is going to have to wait another season. Anything else I can do? Thanks
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    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    SouthWest Alabama

    Re: Stains and black algae

    Put some water in the hopper and take a trichlor puck and hold on a place for a few minutes. If it lightens the stain then keeping the FC high for a while will help. If it doesn't, then take a vitamin C tablet and hold on a place and if it lightens it then it's metal staining and you can perform an ascorbic acid treatment on it.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: Stains and black algae

    Have you used that deck brush on it yet? Perhaps a good scrubbing with a common, mildly abrasive cleaner like Comet or Ajax will remove some of may have multiple things that have caused the stain.

    After a good scrubbing, then I would suggest identifying the remaining stain as Bama outlines above.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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