I don't know... i have 4 hens and i put probably about 3 cups out and now they're starting to pick out the grains/seeds (i feed Scratch n Peck organic layer crumbles) and i'm really kind of getting tired of it all... (in the beginning i used to grind it in a coffee grinder to thoroughly mix the grains in but worried about rancidity with ground grains/seeds)
i guess i just keep scooping it back up and adding it into the FF and re feeding the next day. Also started feeding an organic Layer PELLET which they love, right before they go to roost to ensure their crops are full...tried putting it into the Ferment to ferment but idk....
Also tried cutting way back on the pellets (it's not like they eat a huge amount of it, stuff is SPENDY) and mixing it into the ferment i scoop out and feed before they go into roost and they do eat some of that but i've noticed now that the seeds/grains are missing and most if it just sits there in their feeding trough.
I actually noticed this when i went DOWN from 20% protein Scratch n Peck Layer crumble (fed while they were molting) back down to 16% because the CS person advised me they could get too fat on the 20% but it did have less seeds/grains in it.
Maybe i'll just go back to mixing the Organic pellets and the SnP crumbles and Ferment and if they don't eat enough or like it, TOO BAD. Tired of messing with it all and worrying.
SOunds like your giving too much. 3 cups is what I give my 6 hens and one rooster. I would try giving them less. Start with 1 cup and see how they do and increase if you need to.