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Thread: Cyanuric

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    Cyanuric

    Alright I've been working for a pool company for over a year. I question about cyanuric. I know what it does some what. But the part I don't know is. If the cyanuric acid is 100+ but my chemistry is at 5- 7.2/7.6- 80-100. Will I have algae start to grow.

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    Mod Squad zea3's Avatar
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    Re: Cyanuric

    Hi, welcome to TFP! Just to clarify, are you saying your current levels are FC 5, pH 7.2-7.6, CYA 80-100?
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    Re: Cyanuric

    Welcome to TFP!!!

    I have no idea what all those numbers are ... care to elaborate?

    If your FC is lower than the minimum listed in the FC/CYA Chart, then you are at risk for algae starting as well as disease transmission.
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    Re: Cyanuric

    No my alkalinity is 80-100

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    Re: Cyanuric

    5 on chlorine 7.2-7.6 on pH and 80-100 on alkalinity

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    Re: Cyanuric

    5 is < than 7 which is minimum for a CYA of 100ppm ... so yes, you are at risk. {Of course there are special circumstances in which you may be lucky and not have algae grow, but still be at risk for disease transmission}

    But, given those results, I have to guess that you are using test strips which we do not trust as being reliable or accurate.
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    Re: Cyanuric

    No I use a Taylor test kit

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    Mod Squad jblizzle's Avatar
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    Re: Cyanuric

    What chlorine test?
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    Re: Cyanuric

    It test up at 5 actually little dark but I can only go up to 5

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    Mod Squad jblizzle's Avatar
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    Re: Cyanuric

    Not good enough ... you need the FAS-DPD chlorine test as your pink DPD color matching test is limited to 5ppm and will actually have the color fade out at high FC levels.

    - - - Updated - - -

    Please clear something up.
    Is this your pool? Or do you work for a company that maintains other pools?
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    Re: Cyanuric

    Without knowing the CYA level we cannot tell you if you have enough chlorine to sanitize the water and prevent algae from growing. The CYA test tops out at 100. If you have a test that showed 100 CYA the real result may be much higher. When you get a result that high you should dilute the sample by mixing one part pool water to one part tap water and run the test again. Your result will be double what is shown on the test vial.
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    Re: Cyanuric

    There's no guarantee you'll get algae, but you have increased the risk. If there's no algae food, it won't grow. If there's no algae spores, it won't grow. You never see algae in a sealed bottle of distilled water and it has no chlorine in it. But since most pools are not hermetically sealed, algae is a constant risk. For 100 CYA, maintaining a minimum of 7 FC will almost guarantee you won't get algae, as certain as it's possible to be. http://www.troublefreepool.com/conte...art-slam-shock
    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: Cyanuric

    I work for a company. I've drained 1 pool I take care of cya is at 50 and my readings are 5 7.4 and 90 and I no longer have any algae issue

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    Re: Cyanuric

    Quote Originally Posted by robert.wolfe34 View Post
    I work for a company. I've drained 1 pool I take care of cya is at 50 and my readings are 5 7.4 and 90 and I no longer have any algae issue
    5 FC is well above minimum for 50 CYA. http://www.troublefreepool.com/conte...art-slam-shock
    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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    Mod Squad jblizzle's Avatar
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    Re: Cyanuric

    Well, the minimum for a 50ppm CYA is 4ppm. So if it stays above that, then you should be fine.

    How do you guys chlorinate? How often do you visit?
    The methods we teach here are geared toward the homeowners that can spend a few minutes on the pool everyday.
    Jason, TFP Moderator
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    Re: Cyanuric

    I visit pools weekly. 10-12 pools a day.

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    Re: Cyanuric

    We use granules. Calcium hypochlorite

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    Re: Cyanuric

    I'm looking for ways to get more knowledge of my pools. The service guys are to busy to stop and worry about my pools. I clean the same 55 pools a week.

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