The outlet of my 15K gallon AGP Hayward Skimmer is 1.5". I have just upgraded to a VSP pump that uses 2" connectors. Would it cause a problem if I run 2" pipe from the pump, underground across the yard (about 20 feet), then back up to the skimmer but use a 2" to 1.5" pvc reducer to connect the pipe from the pump to the skimmer? Or is that going to screw up the flow?