Bad pool chemistry decisions usually start with one thing: a bad test. We walk through the real pros and cons of the tools most people rely on to test pool water, and why your “best” method changes based on whether you’re running 80 stops a week, bidding a new account, starting up fresh plaster, or managing commercial compliance. We compare test strips, Taylor-style reagent test kits (including the popular K-2005 and K-2006), photometers like the Pool Lab 2.0 and ColorQ 2X Pro, and high-spee...