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Thread: HELP: Can't Keep My Chlorine Levels Up

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    HELP: Can't Keep My Chlorine Levels Up

    You guys converted me to the ways of the Trouble Free Pool last year, and I've been swimming happy ever since.

    This year, though, I'm having a problem keeping my chlorine levels up, and I'm trying to figure out why.

    For instance, today I dumped a load of bleach in the pool at around 10:00 a.m. and 4 hours later, it tested at 14.5 TC (.5 CC). That was at 2:00 p.m. I just tested it now (10:30 p.m.) and I'm down to virtually nil. Nothing. Not even a little pink in the jar.

    My pH is stable at 7.5 and hasn't fluctuated.

    Total alkalinity is in normal range.

    Weather was hot and sunny over the weekend, but today it was cooler (well, less hot) and overcast.

    Pool temp is around 70.

    The water is crystal clear and looks quite inviting.

    The only thing that's off is the CYA, which I can't get a reading on at all. Could the lack of CYA cause the pool to gobble up chlorine like that?

    I'm going broke trying to feed my pool's chlorine habit. Any advice would be appreciated!

    16,800 gal
    Sand filter
    AG - Vinyl
    Pump size ?

  2. Back To Top    #2
    Mod Squad woodyp's Avatar
    Join Date
    Apr 2010
    East Texas

    Re: HELP: Can't Keep My Chlorine Levels Up

    Yep----------sunshine is robbing you blind. Take the CYA to 30 to start and see how it works first.
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
    2 Speed Hayward Power-Flo Matrix 85 g.p.m. 22" 250lb. sand filter hard plumbed
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  3. Back To Top    #3
    Butterfly's Avatar
    Join Date
    May 2007
    South Carolina

    Re: HELP: Can't Keep My Chlorine Levels Up

    I suggest you do an OCLT to rule organics in/out.
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

    ~ One should not use a sledge hammer to swat a mosquito. ~

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