i just replaced an 10 year old rusted out 27' AGP with a new 27' AGP saltwater ultimate . The pump is directly by pool 4' host to skimmer & 4' host to return, and no solar heater or no other water add ons . would it be better to get a 1hp 2 speed or a 1.5hp 2 speed . its been hard to find accurate amp draws and gpm specs for low and high . im looking at the hayward matrix , but will consider others if its more energy efficient . in the past i have ran my filter 24 hours a day with a single speed 1hp pump and it really runs up my power bill up. current filter is a hayward s180t sand filter , but im also considering changing filters if there is something better