Welcome to our forum.
I am surprised that the J-275 doesn't have a circulation pump. I have a J-235CD and although mine only has one 2-speed pump, it does have a circulation pump that runs 24/7 (I also have the optional ozone). I have my fitration set to twice a day for half an hour each time. If you do not have a circulation pump then do you have to run the filtration more often to give the water a regular stir?