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Thread: Vinyl pool cloudy - mustard algae, algae, or pollen???

  1. Back To Top    #1

    Join Date
    May 2013
    Location
    Manchester NH
    Posts
    16

    Vinyl pool cloudy - mustard algae, algae, or pollen???

    HI all, I have a read a bunch on here about pollen, and mustard algae, and am not sure which I have, so making a new post.

    Here are the stats from right now:

    POOL 6-14-14 10 AM

    FC 4.0 PPM
    CC 0.0 PPM
    PH 7.6
    CYA 55
    TA 70
    CH 80

    Pool is 80 degrees.

    In the northeast.

    Pool gets DIRECT SUN for all but two hours in the morning.

    Yellow slime is all over, sides and bottom, on stairs.

    Vac won't pick it up on 1 pass (hayward navigator pro) even on super suck.

    Takes about 5 passes (all night) to get the yellow up.

    Brush displaces the stuff into a poof which then resettles hours later.

    There is pollen around, and we are near some big pines, and it is spring.

    But I am no sure if I should shock or not, since the CC is 0 and it may be pollen.

    But it is murky and cloudy and after vacuuming all night, it still seems to be coming back, not so much like pollen floating in the water. I ordered some skimmer socks, but not here yet.

    Any help much appreciated, thank you!!
    28000 gal inground vinyl installed 7/2013, hayward c5030 525 SF cartridge filter, hayward SP3400VSP variable speed pump, hayward 125000 BTU heat pump, chlorine dispenser

  2. Back To Top    #2

    Join Date
    May 2014
    Location
    SW, MO
    Posts
    58

    Re: Vinyl pool cloudy - mustard algae, algae, or pollen???

    What does it feel like is it slimey or does it feel gritty and firmer than algae? From what I understand mustard algae is a shade loving algae so it would be odd to have it like that in a full sun pool. What is your overnight chlorine loss? If your chlorine isn't dropping and your cc is at 0 I'd assume it's pollen but definitely wait for an expert to come along. No need to wait for skimmer socks though, get some pantyhose, knee highs will work and slip one over your skimmer.

  3. Back To Top    #3
    Smykowski's Avatar
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    Sep 2011
    Location
    Gurnee, IL (North Suburban Chi-town)
    Posts
    3,065

    Re: Vinyl pool cloudy - mustard algae, algae, or pollen???

    Bring the FC up to 10 and do an OCLT. Mustard algae is more rare than you'd think. If it's algae, it's probably a more "normal" strain. What does your daily FC consumption look like?
    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
    The most important article on this site - The ABCs of Pool Water Chemistry

  4. Back To Top    #4

    Join Date
    May 2013
    Location
    Manchester NH
    Posts
    16

    Re: Vinyl pool cloudy - mustard algae, algae, or pollen???

    Thank you. Daily FC consumed averages 2. I get it up to 5 or 6 and it gets down to 3 or so, then I add 1 jug of great value 8.25% and we are back to 5-6.

    OCLT was 0.5

    - - - Updated - - -

    Additional info, I dont run the filter at night. I think thats when the pollen settles. And the skimmer socks don't seem an added help! Just more things that need to be cleaned.

    - - - Updated - - -

    Reply to poobears, I can't really feel it at all, maybe a little slimy. When you touch it with your hand it moves but i was surprised the vac had trouble. Have to brush it.

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