I have a 6000Gal fiberglass in-ground pool. I use a Polaris 280 in it. Right now I have a low end 1 3/4HP pump combined with a Hayward 18" sand filter. I have a skimmer, two bottom supplies and three returns of which the Polaris runs off of one. I can control the flow to each return.
My pump appears to going. It used to get the filter up to 20lbs of pressure and now it is down around 10lb. It doesn't seem to be giving the Polaris the zip that it used too. It also appears to have a small leak somewhere. Since it is 4-5 years old and I also think that 1 3/4 HP is overkill on my pool, I was considering getting a new pump.
I like to run the filter 6 hrs / day in the summer spread out throughout the day.
Any suggestions on a pump that would be recommendable in my setup? Price is a consideration, but I am interested in enery efficiency as well. Do I need a two stage?