When your trying to fill a pipe manually it can be hard to get the air out and then get the intake side back underwater, and corrugated pipe is more prone to holding air bubbles.
Is there anyway you can get a pump there to help get the siphon flowing?
Also the longer you can make the pipe on the discharge side that is below the pond level the more suction you'll get.
Last edited by adirondack pond; 04/10/12 12:35 PM.
