Just an update on my FF experiment. They absolutely love it! I have it in a gallon mason jar. Every evening I get enough out that they can completely eat in about thirty minutes ( about 6 - 7 spoonfuls ). I then put 2 cups of feed and 1 cup of water back in and stir it up vigorously. This seems to give me enough so that I am always leaving about a half gallon of the FF in the jar and then replenishing it for what I'll take out the next day. It doesn't have a bad smell, it just smells sour ( almost a sweet smell ) kind of like sauerkraut or something similar. It swells up and has bubbles on the top every evening and reminds me of sourdough starter. As for the feeder, these guys are in a limited space pen right now ( hopefully going into a new grow out pen this weekend ) so I split a four inch piece of pvc and attached it to two 2x4 pieces for legs, this is easily taken in and out of the pen and cleaning is a breeze. Yes, they jump in and walk around in it and I wish they wouldn't, the pen floor seems to take care of any left on their feet. But ... I will be building one of those feeders as soon as I get them in the new coup!!
BTW ... I have read of all the benefits of FF, but are there any visual indications of how it helps? I don't know if its because of the FF or just a natural growth spurt, but these guys are sure putting on some weight/height/frame. This has gone so well, I believe I am going to start another batch for my main coup. Will keep ya'll posted.