Quote Originally Posted by Interloper View Post
So... What am I missing? Why do we spend so much time testing and tracking FC, once we own SWCG units? Habit? Inertia? Do we really need to check?
I check FC daily (using K-2006 kit) because:

1) I want to keep my FC as close to 5% of my CYA level as possible, neither over- or under-chlorinating my pool
2) I want to understand the relationship between bather load & amount of sunshine with respect to my SWCG and pump settings. Understanding that relationship helps me fulfill objective #1 without too much trouble.
3) It takes just a couple of minutes of my time daily, which is much better than spending a lot of time battling a pool problem

An ounce of prevention is worth a pound of cure.