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Thread: Pool SLAM Overnight Loss

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    Join Date
    Jun 2015
    Location
    Voorhees, NJ
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    49

    Pool SLAM Overnight Loss

    I am in the process of SLAMing my pool. The overnight loss into this morning was 1.5 ppm. This is probably a dumb question, but is that close enough? If it's imperative that it's 1.0 or less, I will continue adding bleach. I just wanted to check first. My pool water looks perfect. There is no discoloration or algae visible.
    Inground Pool - 35,000 gallons - SWG (Nature2 - FUSIONSOFT1400) - Cartridge Filter

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    Join Date
    Aug 2010
    Location
    Dallas, TX
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    Re: Pool SLAM Overnight Loss

    Close enough is zero with a tolerance of zero.

    1.5 ppm is a loss.

    Sorry man, keep going. Algae does not have to be visible to be present. It could be hiding somewhere.
    Built in 1957 44,000 gallon in-ground, Wet Edge Primera Stone in Sky Blue, Intelliflo VF Pump, 600 lb. Pentair Triton II TR-100 Sand Filter, CircuPool RG 60 Plus SWG, TF-100 test kit
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    Join Date
    Jun 2011
    Location
    Long Beach, CA
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    Re: Pool SLAM Overnight Loss

    Short and to the point, continue on with the SLAM.
    16k gal plaster with raised spa, Jandy DEV60 filter, 2 HP 2-speed SHPF Jandy Stealth pump
    Hayward Aqua Rite T-15 SWCG, Jandy LXi 400k BTU NG heater, 350 sq.ft. of Sun Star solar panels, TF-100 Test Kit, Dolphin s300i Cleaner
    Test Kits . Pool Math . Chlorine/CYA Chart . The SLAM Process

  4. Back To Top    #4

    Join Date
    Jun 2015
    Location
    Voorhees, NJ
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    49

    Re: Pool SLAM Overnight Loss

    Thanks! I'll keep SLAMing.

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    gboulton's Avatar
    Join Date
    Apr 2012
    Location
    Nashville, TN
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    Re: Pool SLAM Overnight Loss

    Quote Originally Posted by RobbieH View Post
    Close enough is zero with a tolerance of zero.
    I'm stealing this for my sigline.
    -Gordon
    Pool School helps me maintain my 13,500G 24' x 48" ASP with Sand Filtration using a TF100 Test Kit and Pool Calculator.
    Remember, the Shock Process should be followed until : 1. CC is less than 0.5 ppm, 2. An OCLT shows a loss of 1.0 ppm or less and, 3. The water is crystal clear.
    --I didn't buy my pool to swim in it. I bought my pool to watch my wife swim in it. :wink:

  6. Back To Top    #6

    Join Date
    Jun 2015
    Location
    Voorhees, NJ
    Posts
    49

    Re: Pool SLAM Overnight Loss

    I'm glad that I didn't stop SLAMing. I came home today, and my FC dropped from 20 to 10. I am surprised to see such a large drop. Is this normal? The drop yesterday was only 5 ppm. I'm not able to add chlorine throughout the day, as I'm not home.
    Inground Pool - 35,000 gallons - SWG (Nature2 - FUSIONSOFT1400) - Cartridge Filter

  7. Back To Top    #7

    Join Date
    Jun 2011
    Location
    Long Beach, CA
    Posts
    2,669

    Re: Pool SLAM Overnight Loss

    We need test numbers, if there is very little CYA then you could lose most of the FC during the day.
    16k gal plaster with raised spa, Jandy DEV60 filter, 2 HP 2-speed SHPF Jandy Stealth pump
    Hayward Aqua Rite T-15 SWCG, Jandy LXi 400k BTU NG heater, 350 sq.ft. of Sun Star solar panels, TF-100 Test Kit, Dolphin s300i Cleaner
    Test Kits . Pool Math . Chlorine/CYA Chart . The SLAM Process

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