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Thread: CYA testing

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    whataboy's Avatar
    Join Date
    Jan 2015

    CYA testing

    Pool sparkles like diamonds, numbers are spot on, but when I test CYA (Taylor K-2006 kit) several times with same sample I get a 30 then a 40 then a 35. Pool store tells me its 60 haha. This is one of the hardest test to determine where you really are with CYA. I run test just like Taylor video instructions.
    Added bleach last night and checked an hour later and FC was at 5 @ 9:00pm
    This morning 6:00am before daylight had a FC reading of 4.5 (only 0.5 loss)
    4:30PM today FC at 3.5 (1.5 loss in almost 24 hour period)
    Thinking my CYA is about 40. I'm using the TFPC CHLORINE / CYA Chart
    If someone could come up with a better way of testing CYA with accuracy, he or she would become a $MILLIONAIRE$ several times over.
    Any input would be appreciated, Thx.
    Rick T.
    12,000 gallon IG Kidney shape,gunite,white plaster w/25% blue quartz (Chlorine)
    Jandy LED Multi-color pool light, ,Pentair VS Pump,Pentair FNS 48 DE Filter,Polaris 280 Cleaner
    TF-100 test kit, Taylor K-2006 test kit, Speed Stir, BBB Method, PoolMath, TFPC

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    TFP Guide
    Azgirl71's Avatar
    Join Date
    Apr 2015
    Sierra Vista, Az

    Re: CYA testing

    The CYA test can be very hard to determine. If you tested as the video shows then that is all you can do. I would say it is likely close to 40 based off of your testing. If I recall correctly there can be a little variance in the test maybe 10-15ppm but call it 49 for now.
    Intex AG vinyl 15' x 48" 4,300 gallons due to skimmer install, Krystal Clear SF pump combo 2800 GPH, Krystal Clear SWG, Pool Blaster Max vacuum, Hayward thru the wall skimmer, TF 100 test kit with speed stir, K 1766 Taylor salt test, My SLAM Process

  3. Back To Top    #3
    BoDarville's Avatar
    Join Date
    Jun 2012
    DFW, Texas

    Re: CYA testing

    Here's another resource with more details on the testing process: Extended Test Kit Directions. CYA is covered in Post #8.
    Gold Supporter, TFP Lifetime Supporter, 26,680 gal Plaster IGP 3.5 - 10' depth / Attached Waterfall Spa, Manually Chlorinated, Triton Sand Filter, 1.5 HP * 1.1 SF = 1.65 SFHP 1-speed Pentair WhisperFlo WF-26 Pump, 400K BTU NG Teledyne Laars Series One Heater, Polaris 360, Test Kit Comparison, Chlorine/CYA Chart, SLAMing Your Pool, OCLT
    A good test kit is an investment, not an expense.

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