I just set up my new 16X48 Ultra Frame Intex Pool. It came with a 1500 gph pump and filter. http://www.kmart.com/intex-16%27-x-4...W001611963005P The pump does not seem to have enough pressure so I am worried it will not stay clean. You cannot even feel the suction with your hand over the outlet. I have a new PowerFlo 1 1/2hp pump that was given to me, can I use this pump on this size pool, or will it be too big?