Fermented Feed feeder

I saw on BYC someone made a feeder for fermented feed. I thought I'd give it a try so I don't have to scoop it out into feed dishes every morning. After reading what went wrong for them I made a few changes.

I bought 2" pvc pieces with adapters to make the ends threaded. The threaded part didn't matter I just wanted something smooth to push through the hole then connect the pvc pipes to. Then I didn't have to worry about sealing as much hole, just a small crack around the pipe. 

I did 3 pipes to feed ~15 chickens. I'm waiting for it all to dry overnight then I'll test it out. 

Here are the pieces I bought:

They fit together like this.

Cut the holes (used an old cat litter container). You can see my hole saw was a little too small for the pvc so I used my dremel to finish off the circle. Caused it to not be perfect, but I think the caulk will fill in the little spots just fine.

With the small pieces in place and caulked: 

All together. 

I also bought little caps that fit inside but aren't air tight to put on if the mice are a problem:

I might also add a fermenting air lock to let the gas escape without having to crack the lid. The lids on the cat litter container aren't very air tight though so this may not be needed. I'm going to leave it off for now and see how it goes.