Our PB just filled our pool. The pool was filled from the hydrant so the water was pretty cloudy at first.
Let the pump run all night and the water was clear the next day. Last night, i ran the pump at low speed. This morning, i turned the pump off, could hear the water draining in the filter. Then i turned the pump back on high, and got about five - ten seconds of silt/dirt/gunk blown back into the pool via the returns. Any thoughts on what could have caused this?