Dunno about the saltwater generator, but I experimented on my 15K gallon pool and got it down to the minimum that keeps it looking okay. I run the pumps twice a day - 2 hours in the morning and 2 hours in the evening. That gets the pool 95% clean in terms of visible stuff like leaves on the bottom. The Polaris may miss a few things now and then, but it usually gets the bottom clean.