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Thread: CYA not registering

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    CYA not registering

    I have a new pool 18X40 Sharkline Oval (17500 gals.) that we just got filled a week ago. When I filled it the PC told me to get CYA from 0 to 40 would require about 4lbs of stabilizer which I added. I finally got a Taylor 2006 test kit and I'm still not getting any CYA. Should I add more stabilizer or does it take awhile to register?

    Thanks Jim
    17500 gallon Sharkline Morada PUR RTR 18X40 54 tall, 1.5 Hayward cartridge filter,

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    Re: CYA not registering

    an ideal range is between 40-70ish... right? you could go another 4 pounds and that should bring you to around 55

    the test kit that uses turbidity is easier to read once it's past 30 in my opinion.

    Don't forget that CYA needs about a week to fully integrate before you test. And don't backwash it prior to that or you might throw some of it out your waste line
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    JasonLion's Avatar
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    Re: CYA not registering

    CYA can take up to a week to fully dissolve and show up on the test. Also, the test is not so good at measuring low levels, so the actual level could be as high as 20 and show up as zero on the test.

    X-PertPool, the recommended range for a SWG pool is 70 to 80, while for a non-SWG pool it is 30 to 50.
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    Mod Squad jblizzle's Avatar
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    Re: CYA not registering

    4lbs of stabilizer in a 17500 gallon pool will raise the CYA by 27ppm. This could very well still show close to the minimum of the test.

    I would add another 2 lbs and assume you are at about 40ppm. It can take up to a week for the CYA to show up on the test.
    Jason, TFP Moderator
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    linen's Avatar
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    Re: CYA not registering

    Jbliz beat me...

    Poolcalculator gives my 93 ounces by weight to raise your 17500 gallon pool to 40 ppm cya. 64 ounces (4 lbs) would only raise you to 27 ppm cya, which is harder to measure. Also, cya can take up to a week to show up fully in tests.
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

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    Re: CYA not registering

    Thanks for the responses I will add 4 more lbs wait a week and re-test. I am having trouble holding FC and I suspect its because my CYA is not at adequate levels yet.
    17500 gallon Sharkline Morada PUR RTR 18X40 54 tall, 1.5 Hayward cartridge filter,

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    Mod Squad jblizzle's Avatar
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    Re: CYA not registering

    we both said 2 pounds why are you going to add 4 more?

    Posted with Tapatalk ... sorry if I sound short ... hate typing on phone
    Jason, TFP Moderator
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    Re: CYA not registering

    Dont know why I said 4, I will add 2 thanks again
    17500 gallon Sharkline Morada PUR RTR 18X40 54 tall, 1.5 Hayward cartridge filter,

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    Re: CYA not registering

    I said 4 because I like an argument. lol

    I guess it would be good to find out if he had a SWG or non SWG

    Regardless wouldn't 4 more pounds take him to around 55? which would be at the max range for a non swg thus making it fairly easy to read on that turbidity kit.
    -Kevin
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    Mod Squad jblizzle's Avatar
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    Re: CYA not registering

    Good point on the SWG ... no mention, so assumed it was not.

    55 is a little on the high side to start, especially if they end up having to go through the shock process.

    Just a little safer to start low I guess.
    Jason, TFP Moderator
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    Re: CYA not registering

    Non SWG, just added about 2lbs tonight we will see what we got tomorrow.

    Thanks again JIm
    17500 gallon Sharkline Morada PUR RTR 18X40 54 tall, 1.5 Hayward cartridge filter,

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    Mod Squad jblizzle's Avatar
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    Re: CYA not registering

    The CYA may not show up on the test for a week.

    Just assume you are about 40ppm until you can test it next week.

    Posted with Tapatalk ... sorry if I sound short ... hate typing on phone
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
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    Re: CYA not registering

    Checked this morning still not registering anything although I think the sample looks a little cloudy. I will give it a week before adding any more.

    Thanks Jim
    17500 gallon Sharkline Morada PUR RTR 18X40 54 tall, 1.5 Hayward cartridge filter,

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