How did you get a CYA reading of 117? The 'disappearing black dot' CYA test cannot differentiate readings past 100.
Did you add any bleach after you got the reading of 9.5ppm?
Re: How much chlorine loss is normal?
How did you get a CYA reading of 117? The 'disappearing black dot' CYA test cannot differentiate readings past 100.
Did you add any bleach after you got the reading of 9.5ppm?
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