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Thread: My Chlorine Consumption is Down Year To Year

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    Join Date
    Jul 2007
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    My Chlorine Consumption is Down Year To Year

    Last year I logged FC chlorine reading levels, at least till I got tired of doing it in July. This year, for the same week my FC levels are a few points higher. Yes, there are lots of other factors that could be in play but I am attributing it to my automatic pool cleaner. Before I put it in last week, my FC readings were about the same as last year. Since last week, my FC levels are almost too high.
    27' Round Might Sun AG Pool 18000 Gallon Intex Krystal Clear SWG Hayward Pump/Filter on a Timer

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    alanpaul's Avatar
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    Aug 2010
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    South Florida
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    Re: My Chlorine Consumption is Down Year To Year

    It sounds reasonable. If your pool cleaner is removing debris from the water, the chlorine has less work to do, hence the chlorine lasts longer. Although other factors, such as pool usage, chemistry and weather can also influence your chlorine residual.
    In any case, it seems like a good outcome.
    Alan in Wellington, FL - near West Palm Beach
    15,200 gal IG, painted plaster, 1988; 200 SqFt cartridge filter, 2013; 1.5 HP 1-speed pump (uprated), 2005; heat pump, 2005;
    soon to repair (dead) SWG AquaRite T-15 cell, 2005, and replace (dead) suction-side cleaner, 2005.
    Almost everything died this winter 2012-'13, and I know we shouldn't complain... but, Arrgh!

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    bobodaclown's Avatar
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    Apr 2011
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    Lakeland, FL
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    Re: My Chlorine Consumption is Down Year To Year

    Have you used any product that might also have increased your CYA level?
    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

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    Re: My Chlorine Consumption is Down Year To Year

    No. The only things that go in my pool are bleach to shock, salt as needed, a dose of Purple Stuff as needed and muriatic acid or borax to adjust PH as needed. CYA was actually low at startup. I have been bringing it up slowly over the last several weeks. I don't put anything else in it - I wasted a lot of $$$ on chemicals before I found this site.
    27' Round Might Sun AG Pool 18000 Gallon Intex Krystal Clear SWG Hayward Pump/Filter on a Timer

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    Join Date
    Jun 2011
    Location
    Long Beach, CA
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    Re: My Chlorine Consumption is Down Year To Year

    Quote Originally Posted by crokett
    CYA was actually low at startup. I have been bringing it up slowly over the last several weeks.
    There's your answer, you are getting the proper amount of CYA in the water for your conditions.
    16k gal plaster with raised spa, Jandy DEV60 filter, 2 HP 2-speed SHPF Jandy Stealth pump
    Hayward Aqua Rite T-15 SWCG, Jandy LXi 400k BTU NG heater, 350 sq.ft. of Sun Star solar panels, TF-100 Test Kit, Dolphin s300i Cleaner
    Test Kits . Pool Math . Chlorine/CYA Chart . The SLAM Process

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