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Thread: No overnight loss, huge daytime loss, still cloudy

  1. Back To Top    #1

    Join Date
    Jun 2016
    Location
    Ozark, MO
    Posts
    22

    No overnight loss, huge daytime loss, still cloudy

    This morning around 7:30 I measured around 20 FC .75 CC. Then at noon measured 16 FC and .5 CC so I added enough to get it back to 20. Then at 5:30 I just measured 11.5 FC and .75 CC. I'm in the middle of a slam, water still looks the same but I don't know where all my chlorine is going. Am I just going to have to dump 3 gallons of chlorine a day in?
    Pool Size: Round AG 18500 Gallons(27' x 52'' Deep)
    19'' Pentair Sand Dollar SD40 1.5HP Pentair Dynamo Pump

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    Texas Splash's Avatar
    Join Date
    Jun 2014
    Location
    South-Central Texas, Marion/San Antonio
    Posts
    12,979

    Re: No overnight loss, huge daytime loss, still cloudy

    Based on your SLAM FC number, can we assume your current CYA is 50? If so, then the FC of 20 is what you need, so yes, do you best to maintain it consistently. The algae (cloudiness) is taking your FC along with the summer sun. That also explains the rising CC level as it gets oxidized. It's a double-threat which is why it's so important this time of year to watch it closely. At some point that should become more steady.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
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  3. Back To Top    #3

    Join Date
    Jun 2016
    Location
    Ozark, MO
    Posts
    22

    Re: No overnight loss, huge daytime loss, still cloudy

    Yep CYA is 50.

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