teehjaeh57: did the rubber couplers you used leak at all? Were the connections "fragile" in any way? I was thinking about using that type of siphon system to send water to a cattle trough/stock tank at the bottom of a long and steep dam.....that 2 inch PVC would (in my mental plan)dead-end at the stock tank and the water flow would be controlled by a shut off valve float in the tank.
I think that would work as I want to fence out the cattle from this particular pond so I can improve the water quality. This siphon system would only be up and running when the cattle are out on that pasture and the temps are above freezing. BM61.
