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Thread: What type of algae is this?

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    Join Date
    May 2013
    Southern Cal

    What type of algae is this?

    Can someone please tell me what type of algae this is?

    27,300 gallons / IG / Plaster / Spa / Taylor K-2006

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    thehowheels's Avatar
    Join Date
    Apr 2013

    Re: What type of algae is this?

    It's the kind of algae that needs to be killed with the shock process.

    But seriously, it looks like mustard algae, and it's the same thing that was going on with my pool, which had been pool-stored for years before I bought the house last summer. In my case, my CYA was off the chart and required a full draining and a fresh start, and some POP (Pool Owner Patience).
    9k gallon, plaster, IG. Raised spa w/ spillover into pool. AO Smith Century Centurion / Purex Triton WisperFlo 0.5 HP, Hayward 1.5 HP (spa), Polaris 1-516-01 1.5 HP (blower). Hayward DE3620 36 ft2 72 GPM DE Filter, Polaris 145 cleaner. Pool built ~1980.
    Trouble-free, BBB since: April 25, 2013

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    In the Industry
    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: What type of algae is this?

    Somewhere some time ago, I read there were about 7,000 species of algae! "thehowheels" has identified that kind in the pic perfectly....the kind that needs to be killed.

    Chlorine (in adequate amounts) is very politically is non-discriminatory and kills them all.
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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