I asked about this earlier and was given some great suggestions, I bought some BOSS in hopes of it being a remedy to a hen that is laying very brittle and rough eggs. Is there anything I can do to stop this? ... I think I know which hen it is now, and she doesn't seem thin, or underweight so she's getting all the same food as the others, her comb is a lot smaller than theirs but she's been laying for quite a while now. ALSO I AM FEEDING OYSTER SHELLS FREE CHOICE AND IN THEIR FEED, THEY ALSO GET LOTS OF CRUSHED UP EGG SHELLS. WE LIVE IN CANADA IF THAT MAKES A DIFFERENCE.