Garry -
I have 70 feet down the dam, 10 feet across the dam and another 20 towards the pond. I don't see how I can do your method. I got lucky and it worked Saturday...but can't get it started again.
By adding that check valve at the water line, I thought I would have fixed the problem, as the entire pipe was full of water. However, I only have a straight section (threaded cap) at the outlet on the dam. The system ran for a few minutes, but then quit. I don't know if air got in from the dam side, or if I have a leak somewhere.
Without another trip to the hardware store, would adding a 45* to the outlet, then a cap, help?
