I'm in the early stages of designing my own irrigation on my 2.5 acre lot. 1st question of possibly many: My well only has a 3/4 hp pump. I know I will need to upgrade the pump. What is your opinion of the Variable Speed Constant Pressure Well Pumps? The one that has been recommended to me is a 1 1/2 hp 21gal per min. @ 50psi (or close to) pump. With new 1 1/2" PVC pipe and labor for $3000.00. The well is 191 feet deep. Also is there any other option with the same result?