I don’t stick to a fixed schedule, to be honest. If the pool’s been quiet and the weather’s steady, I might only test twice a week. But if we’ve had a few hot days, or the kids have been in and out all afternoon, I’ll check that evening just to be safe. I’ve learned that big swings usually happen after heavy use or storms, so that’s when I’m most careful. Daily isn’t overkill, but sometimes spacing it out works fine if things have been pretty stable.