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Thread: testing CYA

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    testing CYA

    Please help me. Is there any other way to test for cya? My eyes are playing tricks on me. This is the hardest test for me to determine.

    Ph - 7.3
    Ta - 90
    Ch - 300
    Fc - 11.5(shocked recently)
    Cc - 0
    Cya - looks to be 50

    I need another way to test for cya..... frustrated.
    24' x 52' Round AG 11,200 gal., 2 HP pump Cartridge Filter

  2. Back To Top    #2
    pwrstrk's Avatar
    Join Date
    Aug 2012
    Elverson Pa.

    Re: testing CYA

    It can be tricky. Are you testing in full sun with your back to the sun to create a shadow ?

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    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

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    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Tucson, AZ

    Re: testing CYA

    Nope. That is the best test there is.

    Are you doing it outside with your back to the sun with the tube at your waist? Are you pouring the sample back and forth a few times to see if you keep getting a similar result?

    Do your best and call it good.
    Jason, TFP Moderator
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    Mod Squad woodyp's Avatar
    Join Date
    Apr 2010
    East Texas

    Re: testing CYA

    I hear ya'. The MORE I stare at that dot----------the longer I seem to see it!
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
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  5. Back To Top    #5

    Re: testing CYA

    It can be difficult to tell, but you will get better at it when you've done it a few times. Knowing approximately what your results are are far better than the pool stores guess is any way! Even just having a good idea of what it is from your test kit is far superior to the results they would give you.

    It might be helpful to have someone else look at the test with you... same water sample, just pour it back and forth. Each of you do the test and then share the results and see if you are close. Sometimes a second set of eyes can be helpful and reassuring.
    Indiana, ABG 24'x52" Galveston by Blue Cascade (Craigslist $600 w/part of deck included), 13,500 gallons, Intex SWG, solar panel

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  6. Back To Top    #6

    Re: testing CYA

    Thank you for the feedback and suggestions. Didn't know about having my back to the sun..... will try again tommorrow.
    24' x 52' Round AG 11,200 gal., 2 HP pump Cartridge Filter

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