I currently run the pump @ 2700 from 9:am to 12 noon. Then drop it down to 1500 for the next 9 hours. The last 12 it runs @ 1300 until 9 in the morning. Except for when the filter is freshly backwashed, the heater won't come on @ 1300. The morning is when I test and add liquid chlorine, so I like the higher speed to get it circulated. I usually fold back the cover and slowly poor over the return in the deep end.