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Thread: Too high Chlorine

  1. Back To Top    #1

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    Too high Chlorine

    Last Saturday I opened the pool and have been maintaining shock level or higher until all my algae was gone - used 48 gallons of 6% bleach. By Sunday the pool was clear, but there was some algae on the bottom which after brushing a few times per day for most of this week and maintaining the chlorine level has bascially been removed.

    My chlorine level is holding at a fairly constant 20ppm currently. Is it ok to just let it lower itself down over the next week or however long or should I try to lower it somehow?

    I have some of the tri-chlor pucks left from prior years, with a current CYA level of around 60-70 (haven't done a recent test after the water cleared up, probably will do a full test tonight) would it be best not to use these or am I ok using these in my old auto-chlorinator to use them up?

    Thanks!
    Pool Details:
    - inground vinyl liner, approx 35,000 gal; Hayward DE-6000; Pentair VS3050
    - 600sq ft Heliocol; Blue Diamond; 8 Gal Liquidator
    - TF-100

  2. Back To Top    #2
    JasonLion's Avatar
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    May 2007
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    Just let the chlorine level come down naturally.

    I would save the trichlor tablets for another time when your CYA level is lower.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  3. Back To Top    #3

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    Jason, thanks for the quick reply, that was my gut feel. Sounds like I should be investing in a liquidator.
    Pool Details:
    - inground vinyl liner, approx 35,000 gal; Hayward DE-6000; Pentair VS3050
    - 600sq ft Heliocol; Blue Diamond; 8 Gal Liquidator
    - TF-100

  4. Back To Top    #4

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    OK, ran a full test last night:

    FC: 0
    CC: 0
    TC: 20
    pH: 7.8
    TA: 100
    CYA: 70

    I think I am ok, though the pH should probably come down some. What movement (if any) should I see on that as the chlorine levels drop?

    Thanks!
    Pool Details:
    - inground vinyl liner, approx 35,000 gal; Hayward DE-6000; Pentair VS3050
    - 600sq ft Heliocol; Blue Diamond; 8 Gal Liquidator
    - TF-100

  5. Back To Top    #5
    JasonLion's Avatar
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    May 2007
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    Silver Spring, MD
    Posts
    37,887
    There must be a typo, you can't have FC 0, CC 0, and TC 20. TC = FC + CC.

    You should see FC come down by 2 to 4 each sunny day. It usually won't fall overnight, but sunlight will bring it down.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  6. Back To Top    #6

    Join Date
    Mar 2008
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    Garden State
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    Good catch, seems I missed the 2 on FC...it should be 20
    Pool Details:
    - inground vinyl liner, approx 35,000 gal; Hayward DE-6000; Pentair VS3050
    - 600sq ft Heliocol; Blue Diamond; 8 Gal Liquidator
    - TF-100

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