Here's a photo of the pipe inlet in the stream, you can see the gray pvc, I have a 2 inch rubber connector clamped on the end of the grey pvc and a curved piece of 2 inch flexable pvc attached to it. You can also see my second pipe below it covered in foam insulation
You can get the grey pvc in the electrical dept. of any Lowes or Home Depot, one end of each pipe is flaired so you don't have to buy seperate connectors to put the pipes together.
This is the outlet into the pond, I put a white pipe at the end of one line so if there's a stoppage I can tell at a glance which line to check at the inlet.
It's easy to start the siphon with a submersible pump, once the siphon starts just pull the pipe off the pump keeping the pipe under water.
