Learned my lesson...big-time.
Got in the hot tub last night. Bumped heater up to 100 degrees. As usual, moved all the valves back to filter the pool when I was finished. Forgot to put the heater in pool mode (85 degrees).
Much to my dismay, I came home for lunch, went outside, and saw a horribly cloudy pool. Was perfectly clear 12 hours ago. Pool was 99 degrees, and heater still chugging along.
Am I to assume that I cooked something out of the pool chemistry?
Obviously, pool heater is off, and probably won't need its services for at least a week.