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Thread: Floating Algae

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    Floating Algae

    I had a green swamp I turned to a crystal clear pool... or so I thought. I was laying there today and saw a clump of algae float by. I am thinking it is re propagating from my filter. i have a hayward 3620 with the nest of grids. I have a hard time putting it back together so I am hoping for an easy way to clean them without removing them from the manifold. Any suggestions? Also it is going to rain for the next 2 days so I am thinking it would be better to shock the pool AFTER that...

    I was trying to use the pool calculator for the first time and i came up with just 2 bottles of 12% to get to shock.. hope thats right it seems like too little! I was planning on throwing in 4. Did I do it right? these are my current numbers.

    FC 2.6
    TC 4.4
    CC 1.8
    TA 102
    PH 7.8
    CH 103
    CYA 18

    I am thrilled if thats right! every dollar saved is a good thing these days!!!
    Cleveland, Ohio
    IG 36,000 gallons. Vinyl Liner, Hayward ProGrid 3620 DE Filter, Hayward Super Pump, Hayward Gas Heater

  2. Back To Top    #2
    Mod Squad JohnT's Avatar
    Join Date
    Apr 2007
    SW Indiana

    Re: Floating Algae

    Algae can't live inside your filter. It needs sunlight to survive.
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
    Hayward S244T Sand Filter with 1HP Whisperflo Pump. Liquidator C-201 and Solar Heat

  3. Back To Top    #3
    linen's Avatar
    Join Date
    Jul 2010
    Twin Cities, MN

    Re: Floating Algae

    In addition to what JohnT said, if you CC value is correct you need to do the shocking process:, since CC over 0.5 ppm is a sign that your pool has some organics/algae.
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

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    Re: Floating Algae

    Which like I said I am definitely going to shock after the two days of rain. Are you saying though that there is no need to take the filter apart? It will not create a new algae bloom? I was under the impression that live algae spores could hide out in the filter after a large bloom and it was best to take the filter apart after you have cleaned up your swamp. I thought I read it somewhere on the board I just couldnt find the post. I also thought I read about an easy way to clean these grids without having to remove them from the manifold but in searching couldnt locate it. If thats not the case then thats great because even taking the top off that thing is a pain in the butt and I have a heck of time getting the stupid thing back together without it leaking so if I dont have to mess with it I would rather not...
    Cleveland, Ohio
    IG 36,000 gallons. Vinyl Liner, Hayward ProGrid 3620 DE Filter, Hayward Super Pump, Hayward Gas Heater

  5. Back To Top    #5
    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: Floating Algae

    No, algae can't survive in the filter when the water is at shock level.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  6. Back To Top    #6

    Join Date
    Sep 2009
    Greentown, IN

    Re: Floating Algae

    When the water is at shock level, algae shouldn't survive anywhere... except any crevices in the liner, under the steps, etc. It's good to brush frequently to keep any sediment from allowing algae a place to hide from the shock process.
    Indiana, ABG 24'x52" Galveston by Blue Cascade (Craigslist buy w/part of deck included), 13,500 gallons, Intex SWG, solar panels mix 2, TF-100 test kit.

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