I have a Hayward Perflex DE filter on my pool, which is an in-ground, 40x20 footer with 40,000 gallons.

Currently, it's got a 3/4 hp pump attached to it. We ran it for eight hours daily over the summer and we had no trouble keeping it clear at all.

My brother feels that if we got a 1 hp pump, we could cut the daily runtime to 6 hours and still get a complete cycling of the water. However I've read that having a too-powerful pump can have the effect of blasting debris and such through the DE in the pump and actually reduce the filter's efficiency.

Could a stronger pump be better for us, or should we just stick with what we've got?