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Thread: Goofed on test results, not sure what to make of it.

  1. Back To Top    #1

    Join Date
    May 2014
    New York, NY

    Goofed on test results, not sure what to make of it.

    I misread FC after starting to SLAM last evening and thought I had exceeded my target of 28. In reality, FC was 14. This was about 90 minutes after adding enough bleach to bring FC to 28, based on Pool Math and my test results.

    Today FC was holding steady at 14, CC less than .5 and the water looks clear. However, I don't know that FC ever actually reached 28 to kill the algae. One variable from yesterday is that reading CYA indoors, it looked like it was at 70 or so. Re-checking in sunlight, it's more like 50. I never really trust my CYA results though. I find it a very difficult test to read and always do it more than once.

    Wondering if I should add more bleach to bring FC up to 28 again?
    16,000 gal. rectangle vinyl, DE filter, Haywood 1.5 hp pump, Polaris automatic cleaner, heater, looploc cover. Near NYC. Be the fish

  2. Back To Top    #2
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Tucson, AZ

    Re: Goofed on test results, not sure what to make of it.

    You should maintain shock level until you pass the 3 criteria to stop. See: ShockLevelAndMAINTAIN Process
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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  3. Back To Top    #3
    Casey's Avatar
    Join Date
    Apr 2007
    SW PA

    Re: Goofed on test results, not sure what to make of it.

    Do an Overnight FC Loss Test and see how you do. If you loose FC overnight, resume the SLAM with the correct FC levels.
    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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