Here's my pipe feeder for a 3 hen coop. This seems to work well with pellets, but crumble doesn't feed down easily enough. Maybe replace the 60 fitting with a 45 for crumble.

here's the initial reaction that it got from the hens.
I bought the following from home depot:
  1. 2' section of ABS - 2" diameter
  2. 60 degree fitting
  3. 'long' 90 fitting
  4. 2 pipe clamps (plastic ones like this are in the electrical conduit section of the store)
  5. ABS glue
Need to cut the long 90 to form the basin. Here's a picture:

Final Position: