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Thread: black dot still visible in CYA test

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    black dot still visible in CYA test

    That ****able black dot! It seems so imprecise. What lighting conditions do you all use? Does the underlying surface shade matter? Is there any consensus on these issues or am I just OCD?
    18K Gals, Intelliflo VSD, Pentair Catridge, SWG, Solar & Gas Heat, Pebble Tec, Jandy AquaLinks, Pool Pal for Android.

  2. Back To Top    #2

    Re: black dot still visible in CYA test

    Sorry, I looked a few posts down and saw the answer about the black dot test. Bright outdoor light, direct sunlight shielded by body, no hint of the black dot. Sorry for the redundancy.
    18K Gals, Intelliflo VSD, Pentair Catridge, SWG, Solar & Gas Heat, Pebble Tec, Jandy AquaLinks, Pool Pal for Android.

  3. Back To Top    #3
    JasonLion's Avatar
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    May 2007
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    Re: black dot still visible in CYA test

    Glad you figured it out.
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