My 2-4 week old chicks were dying from what I assumed was Cocci. I treated them with Corid for the suggested 5 days which ends today. I believe it worked the chicks are eating more and are much more active. But whats the next step? I saw somewhere there was a 21 day corrid prevenative treatment...should I do that too or will that be too much? I don't see any more bloody stool however at least one still has slightly runny stool. I am a new chick momma so any help would be appreciated!