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:confused: I received the TF-100 kit and performed all tests with the following results: CYA = 110 FC = 65 CC = 0 TC = 65 CH - added 50 drops of 0012 and never turned blue TA - added 100 drops of R0009 and never turned red PH = 7.2 So, based on this, what do I need to do and in what order...

Guess I should update my pool data to show it is 9 years old next month. I have recurring stain problems. My pool service says it is NOT algae, but in summer, it helps algae to grow on those areas easier, I've noticed. I want to order a TF100 test kit and supported the site and it said I...