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Thread: Help with first SLAM

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    Help with first SLAM

    Ok, need some advise.

    It rained over 5 inches over the weekend at my house. Tested yesterday with my K-2006 kit and got high CC so I started to SLAM.

    This morning my FC was 28.5 and CC was 15. Is it possible to have that much CC. Water looks clear and no algae to the naked eye. I added more liquid chlorine to bring FC up to 35 since my CYA is 90.

    I guess I just keep FC at SLAM level and keep checking, right?
    18,500 gunite/pebble plaster, Taylor K-2006 test kit, Jandy 2hp variable pump, cart. filter, ozone system, in-line-chlorinator(not in use), borates, Polaris 9400

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    Richard320's Avatar
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    Re: Help with first SLAM

    Just out of curiosity, did you add anything besides liquid bleach? If you used any Monopersulfate "shock" it falsely reads as CC.

    There's also a very very very slim chance that the rain washed soil in that contains some bacteria that converts CYA into ammonia, which will create high CC readings and a huge appetite for bleach.
    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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    Mod Squad Bama Rambler's Avatar
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    Re: Help with first SLAM

    It's possible to have a CC of 15 ppm but rain shouldn't have done it. Does the rain run into your pool? It could have possibly have washed something into your pool from the surrounding area.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: Help with first SLAM

    I have only added liquid bleach. I do have landscaping behind my weeping wall, but I did not notice any debris. Also, I have deck drains around the pool so no water drains into the pool.
    18,500 gunite/pebble plaster, Taylor K-2006 test kit, Jandy 2hp variable pump, cart. filter, ozone system, in-line-chlorinator(not in use), borates, Polaris 9400

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    Re: Help with first SLAM

    There really is no point to test for CC's once you start the SLAM process. No harm in doing so but no real benefit.

    To complete the SLAM, you have to pass OCLT, so when you think you are to that point, just add the CC's test to your AM portion of the OCLT.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: Help with first SLAM

    Ok thanks. While the SLAM is taking place do I need to adjust pH to proper levels?
    18,500 gunite/pebble plaster, Taylor K-2006 test kit, Jandy 2hp variable pump, cart. filter, ozone system, in-line-chlorinator(not in use), borates, Polaris 9400

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    Re: Help with first SLAM

    Nevermind last question on pH. I read in pool school do adjust pH before you start since the ph test will be not accurate during SLAM.
    18,500 gunite/pebble plaster, Taylor K-2006 test kit, Jandy 2hp variable pump, cart. filter, ozone system, in-line-chlorinator(not in use), borates, Polaris 9400

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    Re: Help with first SLAM

    Ok. I have 2 more questions.

    1. With FC in mid 30's during SLAM, is any danger of damaging plaster?

    2. After SLAM is complete how do I get the FC lower to normal levels?
    18,500 gunite/pebble plaster, Taylor K-2006 test kit, Jandy 2hp variable pump, cart. filter, ozone system, in-line-chlorinator(not in use), borates, Polaris 9400

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    Richard320's Avatar
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    Re: Help with first SLAM

    Quote Originally Posted by kdiamond
    Ok. I have 2 more questions.

    1. With FC in mid 30's during SLAM, is any danger of damaging plaster?

    2. After SLAM is complete how do I get the FC lower to normal levels?
    1) No.
    2) Stop adding bleach and it will go down all by itself in a couple days.

    It is safe to swim up to shock level for your CYA, so as soon as FC dips a little, you can use your sparkling pool.
    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!

  10. Back To Top    #10

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    Re: Help with first SLAM

    ok. Thanks for your help.
    18,500 gunite/pebble plaster, Taylor K-2006 test kit, Jandy 2hp variable pump, cart. filter, ozone system, in-line-chlorinator(not in use), borates, Polaris 9400

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