Here's something I've been mulling over in my head. I haven't figured out the exact process yet but I'm working on it.I've considered large crocks, but they are so darn heavy... and narrow at the top... and I'm short.
Guineas do NOT get fed around here... their job is to eat bugs... we feed them nothing... even in the winter they will pick at grains left or dropped by other livestock, but we have found that feeding them is a waste of money.
I have two 5 gallon buckets going and feed from the one on the left each morning and the one on the right at night. They are identical grains mixes. I then have 2 different buckets for premix ingredients... one for chicks (less calcium, more protein, etc), and one for adults. This way my grains are the same for all ages of chickens and as I pull out the FF I simply add premix from the correct bucket of already combined premix ingredients.
No soy, no gmo.... ever... I grind and mix my own.
My biggest problem with FF is that I dislike feeding twice a day year round. This time of year the free ranging chickens don't get much anyway (if any). But I have a lot of growing chicks. I don't mind feeding chicks twice a day in the spring and summer as I like to check on them and see how they are doing anyway - and I monitor their intake a little closer that way too. But by fall I prefer to feed only once a day. I haven't tried this with ferment yet, but that's my plan for fall. By winter when there is no forage, they don't get out for several months... not just because there are no bugs and forage, but also because my maremma are quite busy since that's peak lambing season. In the past I have fed free choice, home ground rations that were dry... just fill it up every few days. For some reason I'm worried about confining everyone this winter and feeding FF only once a day... not sure why... will have to see how it goes. But I have too many other farming commitments with hundreds of lambs hitting the ground in the winter to try to feed twice daily.
If you look up automatic chicken feeder or treadle chicken feeder on youtube you'll see plans for a covered feeder that has the lid being raised when a hen steps on the treadle. I am thinking about a way to make one of these and put a new kitty litter pan (or something comparable) inside it to hold the fermented feed and not soak into the wood construction. This kind of design would benefit me in a couple of ways. I would only have to feed once per day and I wouldn't have to pick up the feed at night (so the mice aren't being fed).