What she means is that there may be a low level of CYA in the water, but the black dot testing for it won't differentiate between levels of CYA less than 30 ppm.
Re: Opening pool with massive algea growth
What she means is that there may be a low level of CYA in the water, but the black dot testing for it won't differentiate between levels of CYA less than 30 ppm.
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