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Thread: Ready to SLAM, buit is CYA too low?

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    Ready to SLAM, buit is CYA too low?

    I just got my test kit and 4 jugs of chlorine, ready to SLAM for a couple/few days to get rid of algae. Should I bring the CYA up to a certain level before I start? I could still see the dot with the vial full...
    Thanks,
    SeaCorey
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    pwrstrk's Avatar
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    Ready to SLAM, buit is CYA too low?

    If you could get it to 30, that would be great. You can start to SLAM as it's dissolving or wait till it's all dissolved. No need to test for it, as it takes up to a week to fully register. Just assume it's there. Your shock level is 12 for a CYA of 30. You can go a tick or two higher.
    What test kit did you get ?
    I would also get more bleach. I'd start with a dozen jugs. How bad is the water ? Pictures are great !!
    Review the SLAM process and follow it to the T. 😎
    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

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    Re: Ready to SLAM, buit is CYA too low?

    Can I put like 9 3" tabs in the inline chlorinator and open it all the way up to up the CYA?

    - - - Updated - - -

    Oh, and thanks for such a quick reply, gonna go take a pic or 2.
    IG concrete, 14'x24', 11k gal
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    Re: Ready to SLAM, buit is CYA too low?

    Partially brushed to show debris on bottom.
    IG concrete, 14'x24', 11k gal
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    Mod Squad jblizzle's Avatar
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    Re: Ready to SLAM, buit is CYA too low?

    That is a very slow way to get the CYA up and while waiting, you are going to lose a lot of your FC to the sun while you SLAM.

    Each 8 oz trichlor tablet would add ~5ppm of FC and ~3ppm of CYA to your water so 9 tablets would get you close, but how long is it going to take to get them all dissolved? In addition, your FC may get to be too high and your pH is going to crash low if you can get them to dissolve quickly.
    Jason, TFP Moderator
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    pwrstrk's Avatar
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    Ready to SLAM, buit is CYA too low?

    Ahh, she's nice and green.
    I prefer the granular stabilizer route, but you could do the pucks as long as you know how much each puck is raising CYA, FC and lowering PH. Pool math at the bottom of the page, Effects Of Adding Chem's, will tell you what each puck is adding to your water. This won't be the best route to take IMO.
    Again I think it's easier to just go the granular route for your CYA addition. That's what we usually reccomend.
    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

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    Re: Ready to SLAM, buit is CYA too low?

    SO that's the granuals from the pool store?
    IG concrete, 14'x24', 11k gal
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    pwrstrk's Avatar
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    Ready to SLAM, buit is CYA too low?

    Yes. Walmart also has the granular stabilizer. 😎
    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

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    Re: Ready to SLAM, buit is CYA too low?

    Yeah that green's almost all on the bottom - until the brush gets wet...
    IG concrete, 14'x24', 11k gal
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    Re: Ready to SLAM, buit is CYA too low?

    OK great, thanks!
    IG concrete, 14'x24', 11k gal
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    Re: Ready to SLAM, buit is CYA too low?

    Definitely get more bleach! You're gonna need it soon with a green monster!
    18' x 48" (42" water depth) Intex Metal Frame 6,700 Gallons
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    Re: Ready to SLAM, buit is CYA too low?

    I'm using 2.5 gal 10.5% pool store jugs, how many am I likely to go through? How many jugs to raise 10k-12k gals up to 10ppm?
    IG concrete, 14'x24', 11k gal
    Paper cartridge filter, 1hp 2-speed pump soon
    [8] Heliocol panels harvested from a solar electric customer

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    pwrstrk's Avatar
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    Re: Ready to SLAM, buit is CYA too low?

    Hard to say how much chlorine you'll use to clear it.
    Use Pool Math to figure out how much chlorine to add to get to your shock level. Just plug your numbers in. 😎
    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

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