I am already at 30' and still have very low flow rate. I was wondering with the following set up how deep can I go before my pump will not do the job?

1/2hp jet pump w/ expansion tank
1 1/4 point with galvanized pipe
brass check valve at the top before the pump

All I wanted to do weith this well was keep my pond level consistent but I am not pumping enough to do that. Just a trickle comes out and it is pulsing like the well isn't producing enough water. When I look down the pipe there is water about 3' down inside the pipe. With the outlet closed the tank pressure risies enough to cut the pump off but when the outlet is open the tank never comes to pressure thus the pump runs non stop.

Thanks in advance

Rick

Rick Derr