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Thread: Algae - help

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    Algae - help

    Our pool has been pretty clear this summer. No problems, until the past few weeks. It's been unseasonably cool, so we haven't been swimming. Algae is growing in the pool.

    Test results:

    FC=5
    CC=<.5
    PH is 7.8-8 (I have a hard time distinguishing)
    Alkalinity is 90
    CYA is 50

    Thoughts? Should we just shock?
    Chesterfield, MO
    In Ground vinyl liner pool
    - Lagoon Shape - 40'x30'x20'
    - Intelliflo VS Pump
    - Intellichlor Salt System
    - Triton II Sand Filter
    - Pentair MasterTemp Heater
    - EZ Touch Controller
    - Faux stone water feature with sheer descents
    - Turbo twister slide

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    Smykowski's Avatar
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    Sep 2011
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    Gurnee, IL (North Suburban Chi-town)
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    Re: Algae - help

    If algae is growing, it's time to SLAM. How are you getting those test results?
    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

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    Re: Algae - help

    With my Taylor test kit.

    We shocked this morning and vacuumed out what was there.

    I am just not sure how it started, since the test results seem fine.
    Chesterfield, MO
    In Ground vinyl liner pool
    - Lagoon Shape - 40'x30'x20'
    - Intelliflo VS Pump
    - Intellichlor Salt System
    - Triton II Sand Filter
    - Pentair MasterTemp Heater
    - EZ Touch Controller
    - Faux stone water feature with sheer descents
    - Turbo twister slide

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