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Thread: Conflicting test results

  1. Back To Top    #1

    Join Date
    Jun 2013
    SpringHill FL

    Conflicting test results

    Is it typical or not to perform the fc 10 ml test and 25 ml test and get diff numbers?
    Heres what i came up with
    10 ml 13.5 fc. .5 cc
    25ml 12.4 fc .4 cc
    Just unsure of myself this is my first week taking control of my pool away from the pool store
    15x30 gunite 18k gallons Hayward star clear plus 120sqft cart

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

    Re: Conflicting test results

    Those are pretty close to each other and likely within the accuracy of the test.

    Just use the 10ml and trust yourself.
    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
    jcowart's Avatar
    Join Date
    Jun 2012
    Labelle, TX

    Re: Conflicting test results

    Those numbers look good. Unless your using a 25ml and 10ml pipette and your drop size is consistent. That seems to be within the natural testing error. Just remember that the bottom of the curved part of the water looking through the tube is your mark. Wipe the tip first to get static off the tip. Squeeze just to get a drop started and then let gravity take over.

    Trust your results and do the 10ml sample. It saves on testing supplies.
    17500 gallon Doughboy AGP, Hayward DE filter, waiting for the 1.5hp DB pump to go out.
    Learn to take the advice here and be trouble free or use the pool store's advice. "You can't do both and get very far"

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