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Thread: FC loss, Algae?

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    FC loss, Algae?

    Will the FC ever get ahead of the Algae if your maintaining the recommended level of chlorine ppm? I am not talking green pool. Pool is clear but .5 to 1 loss overnight. NO CC's. Is this amount of unseen Algae an issue for swimmers?
    13500 Gallon / BBB Method / TF100
    Pentair SD40 sand filter / 1.5hp Dynamo
    AG / Full Sun / Small Fountain
    Eastern NC, Moderate Rain

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    Join Date
    Jan 2009
    Location
    Cupertino, CA
    Posts
    1,966

    Re: FC loss, Algae?

    Is this something you saw once, or is it happening every night? The test is accurate to +/- 1 drop so a 1ppm difference is within the range of uncertainty of the test.
    --paulr
    BBB "Intermediate Swimmer"
    IG plaster pool 18.5K gal, Hayward Pro-Grid DE filter, 3/4 HP Hydramax II; Polaris 380, 3/4 HP booster
    AG spa 325 gal, probably Sundance of some kind
    Water testing instructions on one page

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    frustratedpoolmom's Avatar
    Join Date
    May 2007
    Location
    SWSuburban Chicago, IL
    Posts
    11,963

    Re: FC loss, Algae?

    A loss of 1pm overnight is acceptable and nothing to worry about.
    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
    http://www.PerfectlyClearPoolService.com

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    Re: FC loss, Algae?

    Paulr, FPM. Thanks, it looks like i'm within the margin of error. That slipped my mind....
    13500 Gallon / BBB Method / TF100
    Pentair SD40 sand filter / 1.5hp Dynamo
    AG / Full Sun / Small Fountain
    Eastern NC, Moderate Rain

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