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Thread: Algae or pollen?

  1. Back To Top    #1

    Join Date
    May 2014
    Clearwater FL

    Algae or pollen?

    Had something show up this year that has not for the last four (since I've had the house & pool) that is yellow in appearance, coats entire surface of pool, yet seems to come off with water movement when I wave my hand a couple inches above it. What I have read in certain places says it's algae; other places it's pollen.

    If it were yellow algae, would it come off of the plaster surface so easily? If I vacuum without brushing, the vac head will also pick it up. Then the next day, it's back again. It does not appear to be getting worse either.

    Up to now, test kit (strips) & chemicals used have been from AquaChem. This year is the first year I have had any major issues.

    I do (or have) used a solar cover over the winter. When I went to pull it off this year, there was a yellow film on top of it.

    Pollen was worse this year than any other, but I'm no longer seeing it on the cars & stuff.

    What additional info would anyone need? BTW, I have already read the post about mustard algae, and didn't get a clear answer from it.

    Pics can be provided if requested. Perhaps even video.


    12k gal, IG plaster, 3/4 hp pump, 90sqft C900 cartridge filter, solar heater-what I was told is that age of solar heater indicates pool is likely 15+yrs old

  2. Back To Top    #2
    frustratedpoolmom's Avatar
    Join Date
    May 2007
    SWSuburban Chicago, IL

    Re: Algae or pollen?

    Pics. We love pics. Mustard (yellow) algae tends to stay in the shady areas of the pool, rather than all over. Sounds like pollen but a pic may help.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    Perfectly Clear Pool Service, Find me on Facebook!

  3. Back To Top    #3
    Casey's Avatar
    Join Date
    Apr 2007
    SW PA

    Re: Algae or pollen?

    I agree that pics always help. I'm going to say that it's pollen because I have the same yellow gunk on the handles of my steps and it comes off with water movement and is across the top of my water.

    You need to invest in an accurate test kit too. Test Kit Comparison

    Welcome to TFP.
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De Filter

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