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Thread: Mustard Algae?

  1. Back To Top    #1

    Join Date
    Oct 2015
    Orinda, California

    Mustard Algae?

    I don't know if this mustard algae or pollen. I just see this yellowish film floating on the surface. See attached pic. Thanks to the board in advance. TJ

    - - - Updated - - -

    I receive my tf-100 test kit on Monday, will post results. Meant to ask the board if they have any thoughts if this is mustard algae or pollen. My pool water is pretty clear.
    28,000 gallon IG pool, plaster, built approx. 1970.
    1 1/2 " plumbing. Pentair, Intelliflo 3 hp variable speed.
    Crystal Water cartridge filter system, model #425
    Dolphin Deluxe 4,

  2. Back To Top    #2

    Join Date
    Aug 2014
    Northern IL

    Re: Mustard Algae?

    Looks like pollen. Mustard algae would be on the walls and/or the floor in areas of low circulation.

  3. Back To Top    #3

    In the Industry

    Donldson's Avatar
    Join Date
    Jun 2009
    NW Ohio

    Re: Mustard Algae?

    Agree, this looks just like some scum floating on the surface. Pollen or maybe someone mowing some dry grass nearby.

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