I recently bought a house with a pool. It's been a huge learning experience. The pool is 7,600 with a Hayward s200 sand filter and a hayward 1.5 hp pool pump. The GPM is 17 and foot of head is approximately 25'. From my research it seems that the 1.5 hp pump is too much for this pool and could cause problems as well as run up a higher electric bill. My question is...is the 1.5 hp pump too much for this pool? What size pump would be more effecient?