I’m going on summer number three of this pool and I’ve never drink any water. I have followed the TFP method really as best. I can utilizing liquid chlorine mostly and some tablets here and there. I have a crystal clear pool, always have an outside of a little efflorescence on the Rockwall, about 6 inches long, and the thickness of the end of a pencil lead - I really not had any issues. I admit, I have never really tested for dissolved solids or anything other than what is listed on the app for common testing. I think my general question is, does there come appointment time where I should take some water out and put fresh water in even if my numbers are good which I recognize I need to post a current set or is this something I can roll with original water until I mess something up.