Quote: I stir it when mixing the dry feed into the water. It usually does not get a bit of attention until I am getting ready to scoop it out to feed to the birds. Consider this: When you are making bread, and have the yeast mixed into the flour and water, do you have to continue to go back and stir it while it is rising? NOPE! That yeast is mixed through that whole lump of dough. Same with FF. Your scoby is mixed through the entire container of FF.
Just so y'all know, if you are fermenting a commercial feed then it's physical dry form (crumble, mash or pellet) is irrelevant, That's assuming it is the right type (starter, layer, grower, etc.) for what you're feeding it to. So long as there are no solid grains then it's all going to be mush after a few hours of soaking anyway!
What FW said. Mash is left as mash, or extruded into pellet form. The pellets can then be crushed a bit to = crumble. It all starts from the same milled product. Mash is sometimes cheaper at the feed store, because it is less processed. It pays to ask questions at the feed store. By asking, I found a layer pellet that is $2 cheaper than the pellets they push. Same formulation minus the advertising hype.