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Thread: When to quit slamming

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    Join Date
    May 2015
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    Burlington, Wa
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    When to quit slamming

    I slammed the pool a month ago it was green.
    back washed when needed
    I passed the overnight test, pool was clear except last 4 feet down to the drain.


    Bought TF-100
    FC 3.5
    CC .5
    PH 7.6
    TA 130
    CH 171
    BORATES 40

    Slammed pool to 24 on Tuesday the 2nd of June
    Have past overnight chlorine test every night,
    The sun takes it out during the day, but I have keeped it at 24
    back washed
    Water is clear except the last 4 feet
    When do I quit dumping chlorine in the pool?
    22,000 Inground, 8' deep,Diving board,Slide,Tagelus Deluxe TA-60D, 3/4 HP pump, Teledyne Laars 250,000 BTU Heater, Heliotrope General Model HM4000A Heating Collectors

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    In the Industry

    Donldson's Avatar
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    NW Ohio
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    Re: When to quit slamming

    To quote from the SLAM instructions:

    You are done when:

    1. CC is 0.5 or lower;
    2. You pass an OCLT (ie overnight FC loss test shows a loss of 1.0 ppm or less);
    3. And the water is clear.


    When all three are true, you are done SLAMing and can allow the FC to drift down to normal levels.
    Clear water means all of it, if you can't see the bottom you aren't done. This is probably why you needed to redo your SLAM after only a month. Also with a CYA of 60 the sun will not obliterate all of your FC. If you are losing it all during the day then something is growing in there.
    JD - 28' Round Above Ground Pool, 17,000 Gallons. Dual speed Jacuzzi pump with cartridge filter. Dual speed 1 HP pump, Hayward S210T sand filter
    Pool School - PoolMath - HIGHLY Recommended Test Kits

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    Richard320's Avatar
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    Re: When to quit slamming

    See if you can't improve water circulation down in the deep end somehow. Aim a return down there or open the main drain all the way or set the vacuum on its side so it's wide open and drawing water from the cloudy end and get that stuff into the filter.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Re: When to quit slamming

    I have been filtering from the main drain for a month 8' pool,
    So you think I have something growing during the day that the chlorine is attacking, but then it quits attacking it at night?
    I slammed again after a month because pool school told me I needed to. the pool has never been all the way clear this year.
    it didnt clear up with the first slam and its not clearing up with the 2nd slam?
    the pool is crystal clear except for the last 4 ' above the drain
    22,000 Inground, 8' deep,Diving board,Slide,Tagelus Deluxe TA-60D, 3/4 HP pump, Teledyne Laars 250,000 BTU Heater, Heliotrope General Model HM4000A Heating Collectors

  5. Back To Top    #5

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    Cool Re: When to quit slamming

    I dont think slamming is helping,I have 0 loss at night for 6 days.
    I found post about deep cleaning filter which I did last night.

    Today the pool is clear all the way to the drain!

    It looks like I had a filtration problem not a algee problem
    22,000 Inground, 8' deep,Diving board,Slide,Tagelus Deluxe TA-60D, 3/4 HP pump, Teledyne Laars 250,000 BTU Heater, Heliotrope General Model HM4000A Heating Collectors

  6. Back To Top    #6
    Mod Squad jblizzle's Avatar
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    Re: When to quit slamming

    Cloudy water starts with a chemistry/algae problem. Sounds like you may have gotten it all killed, but then the filter was not clearing up the dead stuff.

    Glad you got it sorted.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
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  7. Back To Top    #7
    Richard320's Avatar
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    Re: When to quit slamming

    Quote Originally Posted by wgcole View Post
    I dont think slamming is helping,I have 0 loss at night for 6 days.
    I found post about deep cleaning filter which I did last night.

    Today the pool is clear all the way to the drain!

    It looks like I had a filtration problem not a algee problem
    So where's our poolporn?
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  8. Back To Top    #8

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    Re: When to quit slamming

    Yes jblizzle, I believe that was the problem.
    I will see if I cn figure out how to post a picture richard320
    22,000 Inground, 8' deep,Diving board,Slide,Tagelus Deluxe TA-60D, 3/4 HP pump, Teledyne Laars 250,000 BTU Heater, Heliotrope General Model HM4000A Heating Collectors

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