Thanks. Right now, we come off the pump with 2" hose them we reduced to 1" pvc with several holes and the end is capped. The spray from the holes is nice, even if "lopsided". We were considering reducing the pipe size to cause even a greater flow of water through the "jets" or holes... I just didn't want to go too small and cause issues with the pump.
The pipe carrying the water back to the pump is 2" and will remain the same.