Our pool is a 30 foot round above ground pool dished out to approximately 6 feet deep. It is roughly 24,000 gallons. We have solar heating panels on the roof of our garage which goes up to about 20 feet high and we pump the water up to the panels (6 2' x 20' panels) through underground piping which is approximately 50 feet from the pool to the base of the garage. We were told we would need a 1.5 hp pump for this but I am wondering if we could use a lower hp 2 speed pump instead. We have a Hayward Pro Matrix pump and a Hayward DE filter. Can we do this? I just found out that we can get a $150 rebate from our electric company for using a high efficiency pump. They were also showing how much electric we could save. I am all for that right now. Thanks for any help!