Hi all! I have been reading information on pool filters / pumps, and now I have to ask....

I have an 18' AG pool with 52" walls. It has a 1.5 HP Waterway pump on a 19" sand filter.
Is this a bad combo? I read about how some pumps push the water too fast thru the filter and then it doesn't have time to collect the dirt. If this is a bad combo, what is a better one? Do I have to replace everything or just one or the other? Thanks!!!!