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Thread: New pool owner w/ test results

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    spacekid's Avatar
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    New pool owner w/ test results

    Hi all,

    New pool owner and just got my Taylor K-2006 kit in the mail and trying to figure it all out.
    Previously been using a simple 5 way kit and test strips to keep the pool going with Leslie's 3 Inch Jumbo Tabs, in-line chlorinator.
    In-ground 23k pool, currently seeing small signs of yellow algae in pool, but brushing it off and overall water looks good.

    FC 5.5 (edited from before)
    CC 0 (edited from before)
    PH 7.4
    TA 110
    CH 210
    CYA 120 (edited from before)

    Thanks for any pointers and where to go from here.


    23K gal, IG Gunite, Plaster, raised Spa, 2 HP Emerson pump, DE filter, Taylor K-2006

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    Re: New pool owner w/ test results

    Welcome neighbor! We need to get a better estimate on your CYA. Please do the dilution test as outlined in #9 here Pool School - CYA
    310 gallon Tiger River Sumatran Spa, covered, standalone, fiberglass, Bleach
    11,000 gallon in-ground plaster pool, Hayward SmartFilter 550 (cartridge), CompuPool(Hayward) T-15 SWG, Hayward Super II pump
    Taylor Test Kit K-2006C, K-1766, SampleSizer, SpeedStir, Polaris P825

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    Mod Squad Jimrahbe's Avatar
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    Re: New pool owner w/ test results

    SK,

    This is the reason you have algae... With your high CYA level you almost can't put enough chlorine in your pool to prevent algae..

    I concur with Analogbytes that you need to run the diluted CYA test..

    Not sure of your cost of water, but here in Bedford, a fresh fill in my 17K pool is less than $50..

    I say this because I see a drain and refill in your future as it is the only way to fix your high CYA level..

    I like your avatar, is that an A10?

    Thanks for posting,

    Jim R.
    Finished in 2015 - 17K Gal, IG, 20' x 25' Almost Rectangular Pool, Pebble finish, three rockport water falls. Pentair Equipment: EasyTouch 4, IC40 SWG, 3 HP VS Pump, CCP520 Cartridge Filter.
    TF100 with SpeedStir and SampleSizer, ColorQ Pro 7, Dolphin Premier Robot Cleaner, added Screen Logic 2, added small 3 person Caldera Spa.

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    Re: New pool owner w/ test results

    Fellow Texans!

    I re-did the CYA test and with the cloudy skies here today I make it out to CYA being 90. (2x45)

    Jimrahbe: Yes, an A-10, a fun little bird
    23K gal, IG Gunite, Plaster, raised Spa, 2 HP Emerson pump, DE filter, Taylor K-2006

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    Re: New pool owner w/ test results

    Scratch that, I messed up and re-did the test again. CYA is 120 (2x60)
    23K gal, IG Gunite, Plaster, raised Spa, 2 HP Emerson pump, DE filter, Taylor K-2006

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    Re: New pool owner w/ test results

    Yup, Pool math says 75% replacement for CYA target of 30, 67% for a target of 40, and 58% for a target of 50. With our weather, I wouldn't suggest 30. CYA of 120 will break the bank to try and SLAM
    310 gallon Tiger River Sumatran Spa, covered, standalone, fiberglass, Bleach
    11,000 gallon in-ground plaster pool, Hayward SmartFilter 550 (cartridge), CompuPool(Hayward) T-15 SWG, Hayward Super II pump
    Taylor Test Kit K-2006C, K-1766, SampleSizer, SpeedStir, Polaris P825

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    Mod Squad Jimrahbe's Avatar
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    Re: New pool owner w/ test results

    SK,

    It would be best to run the test when the sun is actually out..

    As a test of your aircraft knowledge what is in my avatar

    Jim R.
    Finished in 2015 - 17K Gal, IG, 20' x 25' Almost Rectangular Pool, Pebble finish, three rockport water falls. Pentair Equipment: EasyTouch 4, IC40 SWG, 3 HP VS Pump, CCP520 Cartridge Filter.
    TF100 with SpeedStir and SampleSizer, ColorQ Pro 7, Dolphin Premier Robot Cleaner, added Screen Logic 2, added small 3 person Caldera Spa.

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    Re: New pool owner w/ test results

    I have a guess.
    310 gallon Tiger River Sumatran Spa, covered, standalone, fiberglass, Bleach
    11,000 gallon in-ground plaster pool, Hayward SmartFilter 550 (cartridge), CompuPool(Hayward) T-15 SWG, Hayward Super II pump
    Taylor Test Kit K-2006C, K-1766, SampleSizer, SpeedStir, Polaris P825

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    Re: New pool owner w/ test results

    Jimrahbe: I'll try the test again soon. Quickly running out of CYA tester though... I'm backwashing my DE filter later today, so I'll be filling on new water. Will do the test after and see where I'm at.
    What about my other values?

    Really hard to see, an F-4 maybe?
    23K gal, IG Gunite, Plaster, raised Spa, 2 HP Emerson pump, DE filter, Taylor K-2006

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    Re: New pool owner w/ test results

    Quote Originally Posted by spacekid View Post
    Really hard to see, an F-4 maybe?
    That is what I was thinking
    310 gallon Tiger River Sumatran Spa, covered, standalone, fiberglass, Bleach
    11,000 gallon in-ground plaster pool, Hayward SmartFilter 550 (cartridge), CompuPool(Hayward) T-15 SWG, Hayward Super II pump
    Taylor Test Kit K-2006C, K-1766, SampleSizer, SpeedStir, Polaris P825

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    Mod Squad Jimrahbe's Avatar
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    Re: New pool owner w/ test results

    Quote Originally Posted by Analogbytes View Post
    I have a guess.
    Ok, what would your guess be...?

    Jim R.

    Looks like we both posted at the same time...

    You were both right.. an F4E model, has a gun under the nose..

    Jim R.

    - - - Updated - - -

    Quote Originally Posted by spacekid View Post
    Jimrahbe: I'll try the test again soon. Quickly running out of CYA tester though... I'm backwashing my DE filter later today, so I'll be filling on new water. Will do the test after and see where I'm at.
    What about my other values?

    Really hard to see, an F-4 maybe?
    All your other numbers look ok to me for now anyway..

    The first step is to get your CYA/FC back into sync.

    Jim R.
    Finished in 2015 - 17K Gal, IG, 20' x 25' Almost Rectangular Pool, Pebble finish, three rockport water falls. Pentair Equipment: EasyTouch 4, IC40 SWG, 3 HP VS Pump, CCP520 Cartridge Filter.
    TF100 with SpeedStir and SampleSizer, ColorQ Pro 7, Dolphin Premier Robot Cleaner, added Screen Logic 2, added small 3 person Caldera Spa.

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    Re: New pool owner w/ test results

    Morning!
    Replaced some water, and will be adding more today. Am I wrong doing more of a diluting than pure replacing? but you try to explain to my wife why the most of the water in the pool is gone and needs to be refilled.
    CYA seems to be coming down. Is the aim to get down to 40 ?
    Should I consider adding some bleach to reach FC 7.3 to keep algie in check per this chart: Chlorine/CYA Chart

    Today's readings:

    FC 4.5
    CC 0
    CYA 100
    pH 7.6
    TA 110
    CH did not test

    Thanks
    23K gal, IG Gunite, Plaster, raised Spa, 2 HP Emerson pump, DE filter, Taylor K-2006

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    Re: New pool owner w/ test results

    Here is a simplified chart. 8 is ABSOLUTE minimum. You never want to go below it. You should target 11-13.

    - - - Updated - - -

    Pool School - Chlorine / CYA Chart

    Guess I should add the link
    310 gallon Tiger River Sumatran Spa, covered, standalone, fiberglass, Bleach
    11,000 gallon in-ground plaster pool, Hayward SmartFilter 550 (cartridge), CompuPool(Hayward) T-15 SWG, Hayward Super II pump
    Taylor Test Kit K-2006C, K-1766, SampleSizer, SpeedStir, Polaris P825

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    Re: New pool owner w/ test results

    Quote Originally Posted by Analogbytes View Post
    Here is a simplified chart. 8 is ABSOLUTE minimum. You never want to go below it. You should target 11-13.

    - - - Updated - - -

    Pool School - Chlorine / CYA Chart

    Guess I should add the link

    Thanks, so looking at pool math, 2 gallon of bleach should get me there?
    23K gal, IG Gunite, Plaster, raised Spa, 2 HP Emerson pump, DE filter, Taylor K-2006

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    Re: New pool owner w/ test results

    will it be safe to swim at those levels?
    23K gal, IG Gunite, Plaster, raised Spa, 2 HP Emerson pump, DE filter, Taylor K-2006

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    Re: New pool owner w/ test results

    The pool is safe for swimming when:
    1. The FC (free chlorine) is less than SLAM levels for your CYA measurement.
    2. The pH is between 7.2 and 8.
    3. You can see to the bottom of the pool (for swimmer safety).

    The CYA acts as a "buffer" - it binds with the chlorine to help reduce sun burn off and also to act somewhat as a reserve of chlorine. As a buffer, it makes higher levels of chlorine safe to swim in - it's a ratio.
    8,500gal plaster in-ground with attached spa, two floor drains, one skimmer. Chlorine, City Water.
    Pentair WhisperFlo 1hp Pump, MagnaTek Midcentury EPlus motor, Pentair CleanNClear 200SF Cartridge filter, Purex Triton MiniMax 250 Gas Heater, Pentair SunLite, AutoFill.
    Kreepy Krauly Cruiser, TF-100 with SpeedStir. :D

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    Re: New pool owner w/ test results

    Quote Originally Posted by triptyx View Post
    The pool is safe for swimming when:
    1. The FC (free chlorine) is less than SLAM levels for your CYA measurement.
    2. The pH is between 7.2 and 8.
    3. You can see to the bottom of the pool (for swimmer safety).

    The CYA acts as a "buffer" - it binds with the chlorine to help reduce sun burn off and also to act somewhat as a reserve of chlorine. As a buffer, it makes higher levels of chlorine safe to swim in - it's a ratio.
    Thanks, great info!
    23K gal, IG Gunite, Plaster, raised Spa, 2 HP Emerson pump, DE filter, Taylor K-2006

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    spacekid's Avatar
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    Re: New pool owner w/ test results

    Today's readings:

    FC 9
    CC 0
    CYA 100
    pH 7.8 (added acid)
    TA 110
    CH did not test

    Pool looks good, will continue to replace water to bring CYA down.
    23K gal, IG Gunite, Plaster, raised Spa, 2 HP Emerson pump, DE filter, Taylor K-2006

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    Re: New pool owner w/ test results

    You can just run FC and pH daily if you want. I tend to run TA weekly, and CH monthly.
    8,500gal plaster in-ground with attached spa, two floor drains, one skimmer. Chlorine, City Water.
    Pentair WhisperFlo 1hp Pump, MagnaTek Midcentury EPlus motor, Pentair CleanNClear 200SF Cartridge filter, Purex Triton MiniMax 250 Gas Heater, Pentair SunLite, AutoFill.
    Kreepy Krauly Cruiser, TF-100 with SpeedStir. :D

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    Re: New pool owner w/ test results

    Quote Originally Posted by triptyx View Post
    You can just run FC and pH daily if you want. I tend to run TA weekly, and CH monthly.
    Sounds good, thanks
    23K gal, IG Gunite, Plaster, raised Spa, 2 HP Emerson pump, DE filter, Taylor K-2006

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