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Thread: BLACK Algae

  1. Back To Top    #1
    1ginger1's Avatar
    Join Date
    Jul 2015
    willows, ca

    BLACK Algae

    When the summer was over last year we had quite a lot black algae outbreaks. We had spent a lot of money on chemicals. This year we had to add a large amount of bleach, did Slam and Soda. When the pool finally cleared most of the black algae was gone. there are a few small spots that I am brushing down.

    QUESTION: What would you recommend the chemistry stay at in order to keep the black algae from becoming more active?

    I have a clear pool and the Pool Math does not suggest doing anything.
    40,000 gal. In ground plaster pool, 20'x40'x 10' deep, resurfaced 2013, nonSWG, DE filter

  2. Back To Top    #2
    Richard320's Avatar
    Join Date
    Jan 2010
    San Dimas, CA (LA County)

    Re: BLACK Algae

    A good writeup: Pool School - Black Algae
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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