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Thread: My CYA is 90

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    My CYA is 90

    My cya is 90 and i cannot lower it. I have tried pumping water out but it hasn't helped...The fc is 0.

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    JasonLion's Avatar
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    Re: My CYA is 90

    Which CYA test are you using? Many of the common tests will report any CYA level over 100 as 100, and it isn't that difficult to mix up 90 and 100.
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    GreatCanadian's Avatar
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    Re: My CYA is 90

    How much water did you pump out? If you pumped out and refilled, you lowered your CYA. Perhaps it is as Jason said above.
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    Mod Squad jblizzle's Avatar
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    Re: My CYA is 90

    What are you using to chlorinate your pool? Perhaps you are continually adding the CYA as well.

    My guess is it was well above 100ppm and that you have not changed enough water.
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    Re: My CYA is 90

    Quote Originally Posted by JasonLion
    Which CYA test are you using? Many of the common tests will report any CYA level over 100 as 100, and it isn't that difficult to mix up 90 and 100.
    i USED THE CYA TEST KIT PURCHASED FROM THIS SITE. i DID THE TEST 3 TIMES AND CAME OUT WITH THE SAME RESULT--90 CYA. MAYBE I SHOULD DRAIN MORE WATER??

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    Re: My CYA is 90

    Quote Originally Posted by jblizzle
    What are you using to chlorinate your pool? Perhaps you are continually adding the CYA as well.

    My guess is it was well above 100ppm and that you have not changed enough water.
    I AM USING THE CHLORINE PUCKS AND POWDERED SHOCK. I DRAINED A FEW INCHES. THE POOL IS 16 X 24 INGROUND WITH 6 FOOT DEEP END. SAND FILTER. FC IS 0

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    Re: My CYA is 90

    Quote Originally Posted by GreatCanadian
    How much water did you pump out? If you pumped out and refilled, you lowered your CYA. Perhaps it is as Jason said above.

    I PUMPED OUT A FEW INCHES..THE POOL IS 16 X 24 WITH A 6 FOOT DEEP END. THE FC IS 0.

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    Mod Squad jblizzle's Avatar
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    Re: My CYA is 90

    Quote Originally Posted by ran527
    Quote Originally Posted by jblizzle
    What are you using to chlorinate your pool? Perhaps you are continually adding the CYA as well.

    My guess is it was well above 100ppm and that you have not changed enough water.
    I AM USING THE CHLORINE PUCKS AND POWDERED SHOCK. I DRAINED A FEW INCHES. THE POOL IS 16 X 24 INGROUND WITH 6 FOOT DEEP END. SAND FILTER. FC IS 0
    ding ding ding .... all those pucks and powdered shock (dichlor?) are adding CYA. You need to only be using liquid chlorine and drain/replace a lot more water.
    Jason, TFP Moderator
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