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Thread: Cya=90

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    Cya=90

    I have a 20'x4' (9500 gallon) vinyl pool that I opened about a month ago. I have been adding 84 oz. a day of bleach to keep the chlorine up, due to 0=CYA, Ph=7.2, TA=80. Sunday I put in 4lbs of stabilizer from Wal-Mart (in a sock and massaged it all day). Monday some friends gave us a little bucket of super chlorinating tablets and my wife put 2 tablets in the skimmer. Today I went out to test the water (HTH 6-way test kit) and the TC showed to be orange instead of yellow and PH=7.2. When I tried to test TA it only turned a light pink at 80ppm, never turned red. I then tested CYA and it was up to 90ppm. After reading the bucket of super chlorinating tablets I found out it has stabilizer in them also.

    Do I have way too much chlorine in the pool causing it to be orange instead of yellow?

    Will having too high CYA cause my readings to be off?

    What should I do at this point, 56% water change?

    Should I stop using the tablets since they have stabilizer in them?

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    Mod Squad tim5055's Avatar
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    Re: Cya=90

    Yes, stop using any solid chlorine until you get a handle on your real numbers. Color match test kits are subjective at best. Pick up a TF100 test kit so you can get exact numbers.

    And yes, Orange is the next color for higher chlorine.

    Hold off any water changes until you get a test kit.

    To use Jason's line, The key to any solution is to get reliable test results. The best way to do that is to get your own top quality test kit.
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    Casey's Avatar
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    Re: Cya=90

    With the higher CYA level, you'll need to run higher FC levels. It all becomes a guessing game on exact numbers unless you get a reliable test kit. You can check them out here Test Kit Comparison. You will get more reagents with the TF 100.

    Stop using the stabilized chlorine and stay with the unscented bleach. You can save the pucks and use them when your CYA levels get low (this usually happens to me in the Spring time with all the rain) or use them for vacations.
    I'd bet you my bikini you'll never get TFP water from a pool store!

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    Re: Cya=90

    I placed my order yesterday hope to get it soon. Is it safe to leave the pool like this? Is it safe to swim in? Thanks for the help.

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    Richard320's Avatar
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    Re: Cya=90

    Quote Originally Posted by rkersh409 View Post
    I placed my order yesterday hope to get it soon. Is it safe to leave the pool like this? Is it safe to swim in? Thanks for the help.
    Just maintain FC high enough for the CYA -- in your case, never below 7, which will be a blinding Tweety-bird yellow on that tester -- and you can swim in it safely.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
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    Re: Cya=90

    This morning it was still a dark orange. PH=7.2 and TA=80ppm. We have not put anything in since Thursday.

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    Re: Cya=90

    Got my TF-100 today and tested my pool. That was fast shipping. Ordered late Friday, and Monday being a holiday.
    FC=12.5
    CC=0 (never changed color from clear)
    PH=7.2
    TA=90
    CH=120
    CYA=80

    This is after 4 1/2" of rain in 4 days. Had to drain pool several times during the 4 days. And expected to get another inch this weekend. What should I do at this time, if anything?

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    Mod Squad jblizzle's Avatar
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    Re: Cya=90

    It would be nice to lower that CYA some more, but 80ppm is manageable. Just keep the FC above 6ppm at all times. Besides that, enjoy the pool.
    Jason, TFP Moderator
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    Richard320's Avatar
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    Re: Cya=90

    Quote Originally Posted by rkersh409 View Post
    Got my TF-100 today and tested my pool. That was fast shipping. Ordered late Friday, and Monday being a holiday.
    FC=12.5
    CC=0 (never changed color from clear)
    PH=7.2
    TA=90
    CH=120
    CYA=80

    This is after 4 1/2" of rain in 4 days. Had to drain pool several times during the 4 days. And expected to get another inch this weekend. What should I do at this time, if anything?
    Is the water clear? I'd go swimming.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Re: Cya=90

    Quote Originally Posted by Richard320 View Post
    Is the water clear? I'd go swimming.
    Yeah its super clear. Dont think its been this clear for a while. Its amazing not to have green water after a good rain.

    Thanks guys for the help.

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    Casey's Avatar
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    Re: Cya=90

    It will come down after every good rain. I have to take water off mine again and I just added CYA last week because the rain was so much, I lost 15ppm CYA.

    Since you have no pressing issues, can you please add your location to your profile and your stats to your signature as it will help us help you in the future and we won't have to ask a million times, where are you located and what kind of pump/pool/SWG you have or not. Thank you.
    I'd bet you my bikini you'll never get TFP water from a pool store!

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    Isaac-1's Avatar
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    Re: Cya=90

    Like the others said, 80 is still a bit high, but if you live somewhere that gets a lot of rain it should come down soon enough. If the rain was a freak event for this time of year, you may want to drain and replace about 1/3 of your water
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
    I use and endorse TFtestKits TF-100 from http://tftestkits.net
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    Re: Cya=90

    Thanks, I have added my location and pool info into my profile.

    We normally dont get this much rain all at once. You being from SW Louisiana know what I mean. We get heavy storms followed by a month of drought. After this weekend of more stormes I will check again. What would be a good range of CYA in our area 40-60?
    Intex 22' x 52"
    Intex 2500 gph
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    Re: Cya=90

    Liberty - right down the street.

    I run 50 in my pool during the summer and let it dilute down with rainwater as low as 30 over the winter. Seems to be a winning combo for me.
    TFP Moderator Chris V. ~16K Pool & Spa, 48NSF DE, IG Plaster Circa 2000, Intermatic PE653, Challenger pump with a 2 speed B2984, 20gal stenner chlorine injection, Houston, TX
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    Isaac-1's Avatar
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    Re: Cya=90

    I would tend to say that most members from SE Texas run their CYA around 50 ppm on manually chlorinated pools
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
    I use and endorse TFtestKits TF-100 from http://tftestkits.net
    ~Remember TFP counts on your donations to keep this site ad free~

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    Re: Cya=90

    Quote Originally Posted by karmabiker View Post
    Liberty - right down the street.
    I wish it was right down the street. Drive to down town every day for work.
    Intex 22' x 52"
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    techguy's Avatar
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    Re: Cya=90

    Sounds like you are doing well, even without the TF. When you get test kit, you will be surprised to see how easy it is to manage with "real" results.

    As for the orange test results, IMHO, with a CYA in the 80-90 range, keeping your FC between orange and "tweety bird" yellow is the range you want. When you get your test kit you can make real decisions based on accurate data.
    -- Guy --
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    Re: Cya=90

    Quote Originally Posted by techguy View Post
    Sounds like you are doing well, even without the TF. When you get test kit, you will be surprised to see how easy it is to manage with "real" results.

    As for the orange test results, IMHO, with a CYA in the 80-90 range, keeping your FC between orange and "tweety bird" yellow is the range you want. When you get your test kit you can make real decisions based on accurate data.
    Post #7 was with the TF-100 kit. The only test difference between HTH 6 way and TF-100 was the FAS/DPD. Which is the most important in my case. Might have to order a speedstir in a few days.
    Intex 22' x 52"
    Intex 2500 gph
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    Re: Cya=90

    Quote Originally Posted by rkersh409 View Post
    Post #7 was with the TF-100 kit. The only test difference between HTH 6 way and TF-100 was the FAS/DPD. Which is the most important in my case. Might have to order a speedstir in the few days.
    You won't regret it. I love that little gizmo.
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