I have a few 2 1/2 week olds and saw two bloody poos in the brooder today. They are on unmedicated feed as I was trying to do this organically. They've never been on dirt besides for about 3 minutes yesterday. Only other thing out of the ordinary is that my son gave them a few mealworms yesterday as well. Should I go ahead and treat for cocci? I'm assuming the corid will have directions for such young chicks?