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Thread: Full test: +CYA, test result same, losing my mind!

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    Full test: +CYA, test result same, losing my mind!

    Last Wednesday I added 24 oz of stabilizer (1.5 lbs). Which should have raised CYA by 13 ppm. I realized that I hadn't been doing the test properly (previous result was 30, slightly less). Tonight (7:30pm) I did the test again, outside -- sun shining, turned my back and checked the dot. It went all the way up to 30! Actually over. I have another 1.5 lbs on hand, should I give it more time and re-test or add more?

    Last night I took FC up to 8, it's now at 5. We had 4 adults swimming for about 2 hours and the pool gets full sun (very sunny today too) until at least 7pm when it gets partial sun during the remainder.


    Full test results:
    FC = 5
    pH is 7.2
    TA = 70
    CH = 120
    CYA = 30 (or less)


    Also -- pH has been 7.2 even though I've aerated 2 nights in the past week or so, I'm aerating again tonight too.

    Maybe I should go ahead and add more CYA along with some baking soda (31 oz). Thoughts..?



    Thanks,
    Aaron
    Aaron
    [ Vogue Vectra 24' AG | Hard plumb: Hayward Power-Flo Matrix 1HP 2-speed, 27" sand filter & Pentair MiniMax 100 NG | Taylor K-2006 | Central IL ]
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    Re: Full test: +CYA, test result same, losing my mind!

    Quote Originally Posted by Speedo
    Maybe I should go ahead and add more CYA along with some baking soda (31 oz). Thoughts..?
    That sounds like a good idea.

    Note that the Cyanuric acid will lower the pH a little. So, that explains why the pH has stayed low.

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