I have the same pool. My pump/filter lasted me 2 seasons before the pump locked up. For a while I could kick the thing to get it moving again but it eventual settled to a steady hum. I replaced it with a sand filter system I got for free on craigslist. Watch craigslist in the winter months and people put filter systems up for free or dirt cheap just to get rid of them. you may have to do some repair work but hey its free.

David