Okay after reading pool school I decided to do with the AquaPro 200 SQ. FT. Cartridge Filter System 2-HP 2-Speed Pump instead of the AquaPro 24" Sand Filter System 2-HP Pump. Its the only option my pool store offers for a 2 speed pump and I was worried about electricity costs. I hope the cartridge filter is just as good as the sand and I won't kick my self in the *** later. I haven't singed the docs yet so I can still change it if needed.