My father in law was here looking at my small 10,000 gallon pool which is filtered by a 36 sq. ft Pentair Plus DE filter attached to a 3/4 hp pump. He has an 85,000 gallon pool that is currently being filtered by an old large sand filter that is attached to a 5HP pump.
Would a 60 sq. ft Pentair Plus DE filter be adequate to filter his large pool. What about attaching to such a large motor/pump?