So I'm out shooing my polaris away from the wedding-cake steps where it likes to hang out (I guess it has a sweet tooth), and I notice the top step looks kinda dingy. My cover doesn't actually cover the steps, it's a little too small. Swoosh the step with my hand, a cloud of dust appears... huh, maybe this is the pollen everybody keeps talking about...
Water level is a bit low so I drag out the hose and pull back the cover on the deep end to drop the end in, and... my light... it's not shiny. It's GREEN!
Guess I haven't been quite as careful about my FC as I shoulda been. I know what to do, it's just annoying.
The moral is: Trouble Free doesn't mean don't pay attention! Gotta peek under the covers once in a while. (Haven't been swimming that much yet.)