I have an above ground pool with a sand fiter. So I realize when adding chemicals you have to run the pump an adequate amount of time to mix said chemicals properly. My question is on days when you are not adding chemicals is it OK to just run it long enough to keep the surface skimmed and the clarity of the water to my satisfaction? I put chlorine in on Saturdays and I run it about 6 hours. The other six days of the week I've been running it only 2 hours a day. Pool looks great, clarity is crystal clear, readings are perfect. Is there any reason that I have to run the pump longer? Thanks.