I'm looking to buy a new filter and would like some recommendations for filter area size or make/model. I've asked around here and have received many different answers. I live in Pensacola, N. Florida, have a vinyl 22000 gallon pool, 3/4HP pump and 2 1.5inch inlet pipes join together before going into the pump. Outlet is 2 jets at opposite sides of the pool. I have a hard time determining max flow rate with this setup but my best guess is 48 gal/min. My current sand filter is old, has a patch and my local area "pool man" recommended gettting a new one. Do I stay with sand? I have a constant battle with algae. Would a D.E. filter help? I can get a Hayward EC65 or EC75 for about the same price - would either of these be good? Thanks to all who reply in advance!