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J
I went for the more precise method of adding 25 mL of pool water. The water was still more pink than red but slightly darker and it...
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J
Follow these extended directions & see how you fare
https://www.troublefreepool.com/blog/2019/01/18/calcium-hardness/
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J
When I’m testing for calcium hardness, the water turns more a light pinkish than red when I add the drops R 0010 and R 0011. Then when I...
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