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Thread: CYA Levels

  1. Back To Top    #1

    Join Date
    Mar 2012
    Location
    Amarillo, Texas
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    341

    CYA Levels

    My CYA level is 50 and I've been adding about 96 ounces of clorox a day to my pool to keep it on the upper end of the FC level. My pool gets full sun from about 7 a.m. to 9 p.m. every day. Would raising my CYA to 60 be beneficial?
    18'x48" AG
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  2. Back To Top    #2

    Join Date
    Jun 2010
    Location
    Glendale, CA
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    513

    Re: CYA Levels

    As long you have a good grasp of the chemistry and how it works there really isn't any harm in experimenting with a higher CYA value and seeing if that cuts down on your chlorine consumption without any unwanted side affects. In hot sunny locations there's a case to be made for running higher CYA numbers - I personally run my pool quite a bit higher than the recommended values because it cuts down on summer time FC loss.

    BUT - I'm comfortable with my pool and happy with the results. For the uninitiated this may very well be bad advice - hence it's not really given.

    Worse case scenario is you find that you are constantly fighting a low level algae issue and you need to lower it again.
    16K Gal Plaster | Compupool SWG | Intelliflow VF | TF-100

  3. Back To Top    #3
    JasonLion's Avatar
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    May 2007
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    Silver Spring, MD
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    37,879

    Re: CYA Levels

    Higher CYA levels tend to work just fine for a while, and then cause major problems. Going up to 60 is certainly safe enough to experiment with, but I would be very cautious about trying out levels above that.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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  4. Back To Top    #4

    Join Date
    Apr 2011
    Location
    Lynchburg VA
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    393

    Re: CYA Levels

    My pool get full sun most of the day and I have bumped my CYA up to 55 at it has worked out fine.
    18x36 Vinyl In-ground w/roman ends 27,400G, Hayward 3/4hp with 300# sand filter. Hayward heat pump heater

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  5. Back To Top    #5

    Re: CYA Levels

    Quote Originally Posted by mpacheco72
    My CYA level is 50 and I've been adding about 96 ounces of clorox a day to my pool to keep it on the upper end of the FC level. My pool gets full sun from about 7 a.m. to 9 p.m. every day. Would raising my CYA to 60 be beneficial?
    FWIW, I have the same size pool as you, with only about 75% as much sun. My CYA level is about 70 (not by choice, I was using the pucks before finding this site). I am still putting in 80-96 ozs of 6% bleach per day to maintain my levels...
    bbb
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    18x48 intex ultra frame, 6500 gallons, stock pump and filter

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