When I began fermenting my feed, everything I read said it needed to be always kept under a layer of water or it will mold. My chickens were struggling with the soupy mess so I drilled holes into a bucket with a smaller diameter than my fermenting bucket and used the bucket with holes to ferment the feed. When I was ready to feed from it, I let the surplus liquid drain off by lifting the ferment bucket and letting the water drain off into the second bucket. This was still waaaay more work than I was willing to devote to this endeavor.
Now, the way I just barely cover the dry feed with water when I start a new batch, there is
zero excess liquid. No reason for the extra step of draining off excess liquid. It makes for a very thick consistency that doesn't puddle. It also helps to keep poops firm, as well. None of us enjoy soupy poop.
It's simply not true that feed will turn bad unless it's completely covered with water. In the two images I posted, the second, bottom image (my computer doesn't always file photos in order) is of a new batch shortly after adding just enough water to barely cover the dry feed. The top image is after the water has all been absorbed and the mixture stirred. As you see, there is zero water covering the feed.
I've never had mold attack my fermented feed in the seven years I've been doing it. The green particles that cover the feed in the lower photo are dried oregano leaves I add to my feed all winter long for the natural anti-bacterial qualities. You may add your own additions, or leave the feed plain. I caution against adding scratch grains to fermented feed because chickens will make a huge mess picking all of the scratch grains out of the fermented feed and then they won't eat the rest.
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