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Thread: To SLAM or not to SLAM, that is the question.

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    Cool To SLAM or not to SLAM, that is the question.

    FC=5
    CC=1
    OCLT=2.5
    pH=7.6
    TA=70
    CH=325
    CYA=45
    SALT=2000
    BORATES=50
    TEMP=90

    The pool is crystal clear but with the current CC and OCLT, I am concerned something is lurking in the background and maybe I should take preemptive action. We have had a lot of rain the last week or so.

    So, SLAM or no?
    22,000 rectangular plaster. Hayward everything on a C1750 cartridge filter and a Liquidator.

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    Casey's Avatar
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    Re: To SLAM or not to SLAM, that is the question.

    You have 1CC. I would SLAM as you lost in the OCLT.
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De Filter

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    Re: To SLAM or not to SLAM, that is the question.

    Is it save to swim when SLAMming? I would be going up to 18ppm.
    22,000 rectangular plaster. Hayward everything on a C1750 cartridge filter and a Liquidator.

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    Re: To SLAM or not to SLAM, that is the question.

    Disregard. Rookie question. I found the answer. Yes, if the water is clear.
    22,000 rectangular plaster. Hayward everything on a C1750 cartridge filter and a Liquidator.

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    Re: To SLAM or not to SLAM, that is the question.

    Up to but not over SLAM level.

    Don't wear your good suits...
    TFP Moderator Chris V. ~16K Pool & Spa, 48NSF DE, IG Plaster Circa 2000, Intermatic PE653, Challenger pump with a 2 speed B2984, 20gal stenner chlorine injection, Houston, TX
    One cannot follow Islam and Christianity at the same time, nor can one follow pool store methods and TFP at the same time.
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    Re: To SLAM or not to SLAM, that is the question.

    thx

    22,000 rectangular plaster. Hayward everything on a C1750 cartridge filter and a Liquidator.

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    Re: To SLAM or not to SLAM, that is the question.

    I honestly thought 24 hrs would have done it with such a low initial CC. Nope. CC=0.5 OCLT=2.5. I have 2 of 3 SLAM conditions met, but OCLT is killing me. Perhaps better results tomorrow.

    22,000 rectangular plaster. Hayward everything on a C1750 cartridge filter and a Liquidator.

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    Re: To SLAM or not to SLAM, that is the question.

    Have you checked behind your lights, and brushed under and around any non-removable ladders?
    We recently had a member who was seeing OCLT=4 and she had lots of algae behind her light, literally the day after she cleaned them she passed OCLT.

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    Re: To SLAM or not to SLAM, that is the question.

    Yes on brushing no on light. Just checked and OCLT=0.0 CC=0.5.

    I may pull the light anyway though.

    How can I get FC=0.0?

    Thx

    22,000 rectangular plaster. Hayward everything on a C1750 cartridge filter and a Liquidator.

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    Re: To SLAM or not to SLAM, that is the question.

    If FC is 0, OCLT is invalid.
    If you meant FC=0 and CC=0.5 you need to get chlorine in immediately.
    If you meant "How can I get OCLT=0", I'd seriously suggest checking behind your lights.

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    Re: To SLAM or not to SLAM, that is the question.

    Whoops, meant CC

    22,000 rectangular plaster. Hayward everything on a C1750 cartridge filter and a Liquidator.

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    Re: To SLAM or not to SLAM, that is the question.

    CC=0.5, OCLT=0, water clear?
    If yes to all you fit the criteria to pass SLAM.

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    Re: To SLAM or not to SLAM, that is the question.

    I understand I'm SLAM complete. Just curious how to achieve CC=0.0

    22,000 rectangular plaster. Hayward everything on a C1750 cartridge filter and a Liquidator.

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    Patrick_B's Avatar
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    Re: To SLAM or not to SLAM, that is the question.

    Maintain your FC at the very, very top for the Cya level for at least a week or two, and the CC will start to fade away. If you do that daily, you'll see an improvement. 0.5 is fine, but I like it when there is no pink on this test.

    It costs me some bleach, but it keeps potential problems at a bare minimum and I like that piece of mind. Overkill, but it's where I like to be.
    TFP Moderator
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    28K Gal IG FreeForm, CLI Quartz, Pentair 36"SF & VS Pump, Dolphin M5, Rheem

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    Re: To SLAM or not to SLAM, that is the question.

    Thx.

    22,000 rectangular plaster. Hayward everything on a C1750 cartridge filter and a Liquidator.

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    Re: To SLAM or not to SLAM, that is the question.

    As long as all other numbers are in order, there's no real need to achieve CC=0, anything less than or equal to 0.5 is ok.

    Quote Originally Posted by chem geek
    Combined chlorine (chloramine, dichloramine, and nitrogen trichloride) primarily results from Free Chlorine (aka hypochlorous acid) oxidizing nitrogen based componds, such as urine/urea) ammonia, sweat, etc. If all you are doing is killing algae and not oxidizing the above, it's very possible you won't ever see CC show up before, during, or after the SLAM process.
    So, essentially CC=0 is hard to achieve - it is not impossible, but it isn't necessary either.

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    Re: To SLAM or not to SLAM, that is the question.

    Gotcha.

    22,000 rectangular plaster. Hayward everything on a C1750 cartridge filter and a Liquidator.

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