I built a PVC drain pipe feeder for my chickens because it was cheaper then normal PVC and way easier to cut! It was like $7 with taxes for a 10' length at Home Depot. All together with the 90 degree and the caps for the bottom and top it cost $16 bucks!!
This feeder keeps poop out of there food and stop your chickens from wasting feed.
Here my basic instructions on how to assemble it!