Was thinking about putting in my own system. Have been doing alot of reading and just wanted to see if has paid off! I have a 1 and 1/2 horse well pump. I tied into the 1 and 1/4" mainline with tee and ball valve and then with a pressure gauge, then left the pipe open. After I let my well run for a while adjusting the valve so that I got the most pressure without the well cutting off I measured the amount of water for one minute and came up with around 13 gpm's at 50 psi. Just wandering if this is enough flow to water around an acre of centipede? Also wandering off the top of your head about how many heads per zone and how many zones? Thanks in advance for any help!