I thought I'd add a photo of a modification that we made to keep the chickens from scratching the feed out of the tubes. I got some PVC caps and cut them in half. I then mounted them with screws. Has worked perfectly. Nearly zero waste now.
I opted for the individual 4" S&D pipe feeders. They have a 45 and a street 90 together on the business end and a plain cap on top. Nothing is glued. I used a single stainless crew on the 45 to 90 connection. Everything else works great as is. I have 3 of them mounted on a couple of pieces of...