Polaris

[sammm]

I run mine (360 model) while my pump/filter are running. Currently 6 hours a day.

[Sumo1]

My Polaris came with the house. It's old enough that it doesn't look like they do now but it works. We only take it out to swim. It rarely stays out of the pool more than a day and runs whenever the pump's on, currently 5 hrs/day.
Hal

[catnip]

We run our Polaris 280 for 3 hours per day in our 16,000 gallon pool which seems enough to keep the bottom cleaned very nicely. I can't think of any good reason to run it longer than necessary to do it's cleaning job. In addition, the Polaris is fairly maintenance intensive with lots of wear parts, so my advice is to minimize the run time.