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Thread: Black algae?

  1. Back To Top    #1

    Join Date
    Apr 2007
    Location
    NJ
    Posts
    91

    Black algae?

    We noticed thin black streaks on the sides and bottom of the pool. At first I thought it was the vacuum leaving marks behind. I'm not so sure of that anymore. I scrubbed some of the streaks with a wire brush and then rubbed a chlorine puck on each but they are still there. Does anyone have pictures of black algae? And solutions for ridding it. Thanks.
    Carolyn

    22X44 freeform gunite with DE filter (44,500 gallons), 4 deck jets

  2. Back To Top    #2
    Guest
    Black algae is usually in the form of circular patches that start small (about the size of a coin) and get bigger with time. It takes a long time of too low a chlorine for it to start and is really the sign of pool pool maintenance over a perioud of weeks or months.

  3. Back To Top    #3
    gonefishin's Avatar
    Join Date
    Apr 2007
    Location
    Joliet, Il.
    Posts
    389
    Could you take a picture and post it in this thread?

    thanks,

    dan
    21' Aqua-Leader AGP (10,200 gallons).
    Hayward cartridge filter and two speed pump.
    Aqua-Cal HeatWave 100k (HeatPump)
    Salt 3200ppm (in non-salt water pool)
    Borates 20ppm (slowly raising)
    Aqua-Rite SWG

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