My Hayward Power-Flow LX 1hp pump is shot. The bearings are worn and noisy. I want to replace it with a 2 speed pump, cost permitting. The pump is paired with a Hayward S166T 16" sand filter. I want to drop a pump size or two as I think 1 hp may be too large. What say the board? Would 3/4 hp be a better fit?

Thanks. And my neighbors thank you too.