We replaced our single speed pentair whisperflo 1.5hp pump with a Pentair IntelliFlo 011018 3HP Variable Speed Pump w/ Timer.
We opened the pool this week and now i realized that when the pump is on different speeds the de filter pressure is crazy different.
What is a good starting pressure - is it the one when its on max? When do we backwash?
I think the old one started around 18 and we backwashed around 22.