peckpeckpeck
Songster

You're wonderful for adopting hens! You must be so proud of your 6 1/2 year old!
I started fermenting because I got Scratch n Peck feed & found there was a lot of leftover fines at the bottom.
I definitely don't have a lot of extra water for the feed to float around in. Kinda like canning pickles -- you only want enough liquid so the good stuff is just barely submerged.
Like other people, I keep it on a 3 day rotation.
About 1x a week, I clean out the jars & then jump start the next batch with a teaspoon of ACV.
Hope that helps!