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Thread: OCLT timeframe

  1. Back To Top    #1

    Join Date
    Jul 2012
    Location
    South Carolina
    Posts
    48

    OCLT timeframe

    Out for the evening and it rained. Tested FC and needed to add some. Did so. Now, it's 11 pm. I'll need to get water sample at 6 am....7 hours from now. Is that enough time to determine if I've lost less than 1 ppm?
    15 K gallons
    Gunnite
    Centurion Pump/Hayward Sand Filter
    Polaris 360 Robot

  2. Back To Top    #2
    linen's Avatar
    Join Date
    Jul 2010
    Location
    Twin Cities, MN
    Posts
    8,649

    Re: OCLT timeframe

    Should be, but you need to wait for an hour with the pump circulating after dosing to get your evening number.
    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.

  3. Back To Top    #3

    Join Date
    Jul 2012
    Location
    South Carolina
    Posts
    48

    Re: OCLT timeframe

    Thanks...was going to wait 30 mins bc I read that somewhere on here, but I'll do the hour to be sure. Am I correct to assume if it rains overnight, this test is invalid?
    15 K gallons
    Gunnite
    Centurion Pump/Hayward Sand Filter
    Polaris 360 Robot

  4. Back To Top    #4
    linen's Avatar
    Join Date
    Jul 2010
    Location
    Twin Cities, MN
    Posts
    8,649

    Re: OCLT timeframe

    Probably, though if you pass, it still should be valid, but if you fail, then I would redo tomorrow night.
    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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