Not in Denver, but I test ppm with water tester and I test acidity with pH test strips. I have an RO system in my house. I usually add minerals I get from the brew store, a little more for stouts according to what I’ve read.

Spiral notebook I keep in the bottom drawer of my office

Biggest thing about Strange New Worlds is it isn’t trying to be too much, like Discovery. Discovery seemed to want to project an agenda. Strange tells an episodic story, with a little more overarching story, but not too much, enjoyable. In that regard it harkens back to the original Star Trek. I enjoy single stories encapsulated in individual episodes, and not a lot of pushing hard on some agenda.

There are a few other books in that universe, 3 in that story line by Bedford, Brin, then Bear. Another series in the world, Caliban by Roger McBride Allen