Here is what we use. It is pretty close to no waste. It is hanging from the roof of the run. From top to bottom.
- 4" PVC cap. This keeps the feed dry from occasional leaks in the roof.
- The top tube is 4" PVC. This section was added to provide greater capacity
- The bottom tube 3" PVC and has a notch cut out to allow feed to spill into the
- 6" PVC cap. The feed tray is bolted to the 3"tube