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Here are my other test results: pH 7.5 FC 18 CC .5 CH 280 CYA 80 When trying to get my TA reading, the color changes from green to blue after 4 drops of R-0009,then to yellow after 9 drops. I see where the directions say that the test may go from blue to yellow in the presence of high chlorine...

I have mottled green stains on the sides of my pool that began cropping up a couple of days ago. I added bleach and have had my FC running between 26-30 for 24 hrs. My CYA is 60. I know that needs to be a little higher. My problem is that the green stuff is REALLY tough to brush off. I'm...

Hi all, I'm yet another lurker who has been reading and trying to absorb all of your helpful info. We had a major downfall of rain here in south AL and I'm trying to correct my chemistry. To be honest, my numbers were a little off before the storm; now things are worse. After checking with...