Thank you for the advice mobius and lazy!
I'm using the mama heating pad/electric hen for heat (idea from BYC) so the food is not exposed to extra heat and temps here are 65-80 degrees right now...food's in the shade. Eventually a gutter trough will be in the run and not the coop, but right now it's in a food grade container on a brick on top of the deep litter.
I don't want to put extra back in the ferment b/c they do manage to kick some litter in there, but I can move their 'dinner' feeding to earlier in the day and then remove for the night.
Despite fermenting for so long, it's nice to come back and chat when I come across new issues/ideas!
ShaCoboY, x2 what lazy said!
Nutrition increases/is more bioavailable due to fermentation. You'll notice their poop smells less because there's less undigested food left. I like to think that they get the most from every bite and, therefore, need less bites. Plus, having *any* fermented food in their diet increases their gut health, both in the chicken's physiology (gut villi) and the beneficial gut colonies. Better gut colonies help digestion and assimilation of nutrients, but they also effect immune strength. In humans the gut is about 70% of the immune system. I'm not sure the amounts in a chicken, BUT helping gut health is surely beneficial.
As far as wet vs dry, my hens have always fared well especially in the summer because the wet food helps them to be hydrated and they aren't always acting on a deficit due to dry food digestion's need for water.