I believe they started doing this whole "chlorine only"/separate tube thing because the FAS-DPD reagents can stain the plastic?Okay so what you do is put a big dot on one of those tubes. That will make it your chlorine only one. They are really the same so I don't think it really matters. I only have one tube that I do all of my tests in so not sure why they would do that.
Clear by Saturday may be tough. Swimable, maybe if you follow a strictly follow the SLAM Process process. Test often, maintain FC at the proper level and brush. Backwash the filter only when it gets 25% above clean pressure.Thanks! I'm hoping it will be clear by Saturday. My TF-100 arrives tomorrow.