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Thread: Cannot get chlorine level up

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    Cannot get chlorine level up

    Added stabilizer 72 hours ago and levels are sitting right around 35. I added 112 oz of 8.25% chlorine bleach and level is barely registering at maybe 0.5. Do I add more bleach? I used the calculator which said to add 96oz but I added a little more and it still isn't making a difference at all.

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    Mod Squad jblizzle's Avatar
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    Re: Cannot get chlorine level up

    What does the water look like?
    Is this a new fill?

    Short answer is ... add more bleach. And if it is lost that fast, you may need to follow the
    ShockLevelAndMAINTAIN Process.

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    Re: Cannot get chlorine level up

    Pool is crystal clear, just beautiful and I can smell the chlorine.
    Yes, new fill about 2 weeks ago.
    I will add a signature but I am in the Midwest.

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    Mod Squad jblizzle's Avatar
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    Re: Cannot get chlorine level up

    You usually only smell chlorine if you have high CC (the bad stuff) and actually do not have enough FC in the water.
    So, certainly sounds like a SLAM might be needed.

    How have you been maintaining it the last 2 weeks?
    What test kit are you using? Post up the full results.
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    Re: Cannot get chlorine level up

    I had been maintaining with the 3" tablets until I found this site and ordered the Taylor K-2006 last week.
    FC -<1, very very pink tint
    pH 7.6
    CYA 35
    Help me understand this SLAM, I am not understanding what the chart is telling me. It says to bring the Shock FC up to 14?? Do I go to the calculator and use 14 as the target to tell me how much liquid chlorine to add?

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    Re: Cannot get chlorine level up

    Quote Originally Posted by DBKwas View Post
    I had been maintaining with the 3" tablets until I found this site and ordered the Taylor K-2006 last week.
    FC -<1, very very pink tint
    pH 7.6
    CYA 35
    Help me understand this SLAM, I am not understanding what the chart is telling me. It says to bring the Shock FC up to 14?? Do I go to the calculator and use 14 as the target to tell me how much liquid chlorine to add?
    Welcome to TFP

    Yes for SLAM, the idea is to bring your FC to shock level for your CYA, you can use pool math to calculate chorine needed......just make sure you have your pool volume plugged in at the top and the correct %of chlorine you are using (liquid). You want to keep your chlorine that high testing and adding as often as necessary/possible until you pass three tests

    Clean clear water
    CC .5 or less
    OCLT Of 1 or less (overnight chlorine loss test)

    Brush well and often

    If your water is clear with no cloudiness or visible algae, you may be fine raising your chlorine ASAP with liquid to the high end of your target range for your CYA and keeping a watchful eye on that FC

    Using those tabs has a place and a time but what is important is understanding that eventually they can get your CYA to an unmanageable level. Take a look at this article in pool school Pool School - ABCs of Pool Water Chemistry

    And ask any questions you have here.
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    Re: Cannot get chlorine level up

    More questions on balancing the water in my pool! Here are my current numbers:
    pH: <7.0
    TA: 130
    FC: 0
    CYA: 45
    CH: 170

    As I understand, if I raise the pH by adding borax I will also increase the alkalinity too which is already too high. I am stuck!!
    19000 gallons, 27x54 AG, Taylor K-2006 test kit. Installed 2016

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    Re: Cannot get chlorine level up

    You need that PH to come up. Can you aerate by pointing returns up? Bring that PH up.

    Why is FC 0 ?

    Sounds like a lot of issues going on here. Important question.......how are you chlorinating your pool?
    18*36*23 true "L" vinyl IG 29,000 gallons. SWG. TF-100 test kit.
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    Re: Cannot get chlorine level up

    I am using bleach. SLAMed it on the 23rd and seemed to sustain fairly well until I tested this morning and nothing which led me to test EVERYTHING.
    If I bring that pH up with Borax, it says it will also raise the TA correct? Do I raise pH first and then worry about TA?
    19000 gallons, 27x54 AG, Taylor K-2006 test kit. Installed 2016

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    Mod Squad pooldv's Avatar
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    Re: Cannot get chlorine level up

    Yes, raise PH to 7.2 first.

    SLAM is not a one day thing. Here is the process, SLAM
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    Re: Cannot get chlorine level up

    Before I attempted the slam on the 23rd, pH was 7.6. What would cause such a drastic decrease?
    19000 gallons, 27x54 AG, Taylor K-2006 test kit. Installed 2016

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    Mod Squad jblizzle's Avatar
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    Re: Cannot get chlorine level up

    Borax will not increase the TA very much.

    You have to add FC every day and during a SLAM more often than that.

    What have you added to the pool in the last 5 days?
    Jason, TFP Moderator
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    Re: Cannot get chlorine level up

    I added 200+ oz of bleach on 7/23 and threw in a few 3" tablets this morning to get at least some sort of chlorine in there.
    I am getting and adding borax tomorrow. Should I slam after I get the pH up to 7.2?
    19000 gallons, 27x54 AG, Taylor K-2006 test kit. Installed 2016

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    Re: Cannot get chlorine level up

    The tablets can lower PH.
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    Re: Cannot get chlorine level up

    Ugh, I think I need to hire a pool guy ��
    19000 gallons, 27x54 AG, Taylor K-2006 test kit. Installed 2016

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    Re: Cannot get chlorine level up

    26' X 52" Intex Ultra Frame. Intex Sand Filter
    26' X 52 Intex Ultra Frame Install
    You can lead a horse to (clear) water, but you can't force him to swim in it!

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    Mod Squad jblizzle's Avatar
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    Re: Cannot get chlorine level up

    Yes you need to actually follow the SLAM until you pass the 3 criteria to stop, and not just throw bleach in once .
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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