Newbie here, but I'm hooked on this site and hobby! Started on an Intex 20x4 project a couple weeks ago. Buried half w/ 6 inch drop towards the middle. Framed out my pump house that backs up to the pool w/ a 4x6 glass basketball backboard. Decking is half done. Now for the backbone. I purchased an enormous Hayward 200 series sand filter off of craigslist, and now have found a Hayward 1 1/2hp powerflo, new in box, for $160. Price seems too good to pass up. Is it too much pump, especially for the one suction? I realize energy costs would go up, but wouldn't it have to run much less than the Intex 2500gpm pump? My main concern would be so much suction it could hurt someone. What could make this pump possibly work or should I move on to something smaller? Thanks!