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Thread: Chlorine Use Excessive?

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    byteme's Avatar
    Join Date
    May 2013
    Marietta, Georgia

    Chlorine Use Excessive?

    Greetings, all!

    Since converting to BBB last year, our pool is cleaner and nicer that it's ever been. I've converted a couple of friends, too! (Still working on the bro, though).

    I have a question about chlorine use. We are in North Georgia. The pool gets full sun from about 10am until 8pm. The water temp today was 74.
    (Too cool for me but the grandkids would swim if there were icebergs in the water!)

    I am averaging between 2 to 3 pints of 8.25% bleach a day, depending on use and sunlight. It was the same last summer, too. The CYA is 40 (tested on pool closing last year, opening this year and last week). My CC level is always .5 or less every day. Just for kicks, I did the .2 test this evening and it took one drop to make the test crystal clear. I'm not losing chlorine overnight, so, I know there are no biologics eating up the chlorine.

    Here's my question...would boosting the CYA to 50 reduce chlorine burn off, or would I still be using the same amount of bleach for the same result because of the increased CYA level?

    Here were this evening's test results.

    FC=3.5 (This was before adding today's bleach to bring it to 7.)

    As always, thanks for everyone's advice.
    13500 gal above ground (24' round/4' deep), vinyl, 2hp/2 speed pump, ProClean cartridge filter (125 sq ft surface area), Hayward auto chlorinator (turned off!).

    "There once was a fellow named Harry, who's pool became green and contrary!
    Then he found TroubleFree, learned about BBB, now pool care's not quite as scary!"

  2. Back To Top    #2
    Casey's Avatar
    Join Date
    Apr 2007
    SW PA

    Re: Chlorine Use Excessive?

    I don't think you'll see much difference.

    You'll have to add a little more bleach to work sided by side with the CYA. Do you have a cover? You can use that to keep the chlorine burning off so fast during the day. How may kids raise their hand to peeing in the pool? I bet the FC is being consumed there too. 3 pints though... I don't think that's too bad. I'd cover the pool and get that temp up some!
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De Filter

  3. Back To Top    #3
    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: Chlorine Use Excessive?

    Bump the CYA up a little, I bet you will use a little less chlorine.
    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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