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Thread: CYA reading...?

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    Join Date
    Feb 2013
    Jupiter, Florida

    CYA reading...?

    Came across all the posts on the CYA black dot test and the variance given by the Taylor 50ppm standard solution. See that it isn't being sold anymore on TFTestkits. Actually can't find it in small quantity (less than 16oz) anywhere. Have no CYA test reading experience so nothing to compare to and I doubt my readings on every test. Waist high, sun to my back, etc. if all fine but if I don't know what it should look like then....?? Some say completely gone, others say you can barely see the edges, etc. Is my only option to just go ahead and order the 50ppm solution and use it to train my eye? Learn what 50ppm looks like and go from there? Probably 14 ounces more than I will ever need.
    2006 IG 18.6K gal marcite saltwater w/integrated 800 gal spa, spillover, 2 Main and 2 Spa Drains, 2 Skimmers
    Goldline Aqua Logic PS-8, Aqua Pod Remote, Hayward GLX-Cell-15-W SWG, Hayward Pool Vac XL, Cartridge filter, single speed pump
    Taylor K-2006, Lamotte Borate Strips

  2. Back To Top    #2
    Mod Squad
    Join Date
    Aug 2012
    DFW, TX

    Re: CYA reading...?

    I wouldn't worry about it quite so much. Pour it back and forth and walk around to different light and see what your readings are. They will likely tend to be within 10 ppm of each other. If in doubt raise it to the next 10 ppm. It is only another 1 or 2 ppm of FC. More FC is always better than less. And remember it is safe to swim up to shock level for your CYA and it is not safe to swim below the min for your CYA. FC/CYA Chart
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    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

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    Teald024's Avatar
    Join Date
    Aug 2016
    Columbus, Ohio

    Re: CYA reading...?

    I too have a lot of difficulty and very limited experience with the CYA testing. It is indeed one of the hardest to learn for anyone. That and OTO chlorine for me, I have a hard time with the yellows. I

    found this info on CYA testing at Taylor very helpful. You can see where the black dot is missing but can still make out the bottom rim of the tube. Remember the size of the dot and when that dot is gone, then you have found the correct reading. This is right on the Taylor site, so their pics should be a good standard of what to look for.
    Aqua Leader Elegance AGP 15'x30'x 54", 12k gallons, vinyl J-hook liner ... Hayward / SwimPro Voyager pump SW159412STL, 2hp, 2spd, Voyager 175sf element filter SW175MDDVPAKS ... Liquid Chlorine... Baracuda 1500 vac, Installed August 2016 - all above came with our "premium package ....CYA/Chlorine Chart... Basic Care Schedule...Extended-Test-Kit-Directions...Pool Closing Info

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    MarianParoo's Avatar
    Join Date
    Aug 2014
    Northern IL

    Re: CYA reading...?

    The 50% solution works well with the kit you have. Not so much with others...
    27K IG rectangular; vinyl liner; sand filter; 1hp pump; auto-cover; heater; K-2006.

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