I liked the idea Built my own the only difference is I cut a piece of plywood to fit in the bottom held in with a clean out adapter. to keep the feed from going to the bottom of the Y pipe.Works great. I wanted to switch to pellets and got a coupon from Purena for Layena Omega 3 pellets .I was surprised they love it and are not eating much of the Layena crumbles anymore I think I'll make another one for inside the coop.
Vinnie

Vinnie