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Thread: Testing CYA with TF-100

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    Testing CYA with TF-100

    OK, First time using the TF-100 kit. I fill the CYA mixing bottle under the label, I add R-0013 to above the label. Shake, wait 30 sec, shake, I then hold C A tube at waist and slowly fill. So when the black dot disappears, that is my reading? Does the water become cloudy in the tube? I filled the tube and still could see the black dot. What am I doing wrong? Or is it that my CYA level is very low and need to add some?
    36X18 Inground Pool, SWG, Hayward Pump, Hayward gas heater, Undertrack Auto Cover, Interfab basketball system, TF-100 Test kit, Polaris 9300 Robot Cleaner, Pool Completed July 29 2010

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    Mod Squad JohnT's Avatar
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    Re: Testing CYA with TF-100

    If it's staying clear you don't have much CYA. The water will be cloudy. The more CYA, the cloudier the water.
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
    Hayward S244T Sand Filter with 1HP Whisperflo Pump. Liquidator C-201 and Solar Heat

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    svenpup's Avatar
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    Re: Testing CYA with TF-100

    That just means that your CYA is 0. What is the background? Is this a new fill?

    You can also check out: http://www.taylortechnologies.com/Chemi ... ntentID=36
    TFP Method Advanced Intermediate
    • 17,500 gallons - In Ground - Plaster - Hayward Swimclear 3020 Cartridge Filter - Sta-Rite Max-E-Glas Main Pump upgraded with A.O. Smith B2980 E-Plus New Centurion Two-Speed Motor - Polaris 280 Cleaner with Polaris PB4-60 Booster Pump - TightWatt2 Timer - Taylor K-2006 Test Kit - Pool Pilot Digital Nano SWCG

    Helpful Links: Pool School, BBB for Beginners, How to Shock (hint...it's a process not a product), Chlorine/CYA Chart, Jason's Pool Calculator

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    Re: Testing CYA with TF-100

    It is a new pool. I had it filled 2 weeks ago. The FC tested at 5
    36X18 Inground Pool, SWG, Hayward Pump, Hayward gas heater, Undertrack Auto Cover, Interfab basketball system, TF-100 Test kit, Polaris 9300 Robot Cleaner, Pool Completed July 29 2010

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    svenpup's Avatar
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    Re: Testing CYA with TF-100

    Tap water doesn't have any CYA, so that is normal. You should add 30-50ppm right away to protect FC from sunlight. Without any CYA your FC will be gone in a matter of hours.

    You should always get a reading for pH, CH, and TA. FC can be 0.

    You should post a full set of numbers to get feedback.

    How are you chlorinating?

    ETA: To clarify, FC in fill water may measure 0 or low...you should never let it go to 0 in your pool. Ever.
    TFP Method Advanced Intermediate
    • 17,500 gallons - In Ground - Plaster - Hayward Swimclear 3020 Cartridge Filter - Sta-Rite Max-E-Glas Main Pump upgraded with A.O. Smith B2980 E-Plus New Centurion Two-Speed Motor - Polaris 280 Cleaner with Polaris PB4-60 Booster Pump - TightWatt2 Timer - Taylor K-2006 Test Kit - Pool Pilot Digital Nano SWCG

    Helpful Links: Pool School, BBB for Beginners, How to Shock (hint...it's a process not a product), Chlorine/CYA Chart, Jason's Pool Calculator

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    Re: Testing CYA with TF-100

    I have a SWG for adding chlorine. I have to head to work now but I will add the CYA early tomorrow. Where exactly does someone purchase CYA? Any Pool store?
    36X18 Inground Pool, SWG, Hayward Pump, Hayward gas heater, Undertrack Auto Cover, Interfab basketball system, TF-100 Test kit, Polaris 9300 Robot Cleaner, Pool Completed July 29 2010

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    svenpup's Avatar
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    Re: Testing CYA with TF-100

    Pool store will definitely have it. Home Depot/Lowes/WalMart if they have a pool aisle. It is also called stabilizer.

    With an SWG you actually want more...70-80ppm.
    TFP Method Advanced Intermediate
    • 17,500 gallons - In Ground - Plaster - Hayward Swimclear 3020 Cartridge Filter - Sta-Rite Max-E-Glas Main Pump upgraded with A.O. Smith B2980 E-Plus New Centurion Two-Speed Motor - Polaris 280 Cleaner with Polaris PB4-60 Booster Pump - TightWatt2 Timer - Taylor K-2006 Test Kit - Pool Pilot Digital Nano SWCG

    Helpful Links: Pool School, BBB for Beginners, How to Shock (hint...it's a process not a product), Chlorine/CYA Chart, Jason's Pool Calculator

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    Re: Testing CYA with TF-100

    I actually have a pool store 2 miles from where I live. So I ran down there and purchased the stabilizer. It says 1LB per 5k gallons. I added it to a sock and tied a knot and put it in the skimmer for now. How long before it starts raising the CYA? and dissolving?
    36X18 Inground Pool, SWG, Hayward Pump, Hayward gas heater, Undertrack Auto Cover, Interfab basketball system, TF-100 Test kit, Polaris 9300 Robot Cleaner, Pool Completed July 29 2010

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    dmanb2b's Avatar
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    Re: Testing CYA with TF-100

    About a day or two, but wait a week to test.

    Now would be a good time to add pool details to your signature so we can help you better
    24'x52" AGP (13,500 Gallons), Intex SWG, (2)Solar Bear 4x20 panels, Hayward S220T Filter, 1/2hp Pentair Superflo

    Pool School, TFTestKits, Pool Calculator

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