Great site, and very informative. Have a sprinkling system running off a deep well 1/2 h.p. jet pump, I believe to be 120' deep, also supplies the house. First jet pump I've ever used for sprinkling purposes and only getting 5 1/2 gpm. Will a larger h.p. jet pump say a 1 h.p. give me the needed 10-12 gpm per zone? Thanks for your help.