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Thread: Cannot Hold Chorline

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    Cannot Hold Chorline

    Ever since the pool was opened this year (week ago), the water has been a light green color, mostly in the deep end. I had a pool maintenance guy come over and do the necessary things to get it up and running. However, it seems to be lacking Free Chlorine (FC). I'm unsure of what to do next, as all of the other levels are in normal range. He put 4 Chlorine tablets in, shocked it and cleaned everything, still no dice.

    Total Chlorine: 3
    Free Chlorine: 0
    Hardness: 250
    Alkalinity: 120
    pH: 7.5

    Using an AquaCheck Select test kit.

    Appreciate the help!

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    JasonLion's Avatar
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    May 2007
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    Re: Cannot Hold Chorline

    Welcome to TFP!

    You need to shock the pool, see the article in Pool School on how to shock your pool. Do you know your CYA level?
    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

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    Re: Cannot Hold Chorline

    Well I have been using "Super Shock-It" 1lb bags. I used one bag on Friday and another yesterday. I don't think I should have used both that close together, but what's done is done. My test kit is old, around late 90's, and there is no reading for CYA.

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    Mod Squad woodyp's Avatar
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    Re: Cannot Hold Chorline

    No reading for CYA, or the kit won't test for it? I wouldn't trust chemicals that old. What kind of kit? Add a sig line to your profile and tell us about your pool/equipment. Welcome~!
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    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
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    37,879

    Re: Cannot Hold Chorline

    One way or another you need to get a CYA test result. You can either get a kit that can measure CYA, or get a pool store to test the water for you.
    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

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