When I got my chicks I had zero knowledge so I just took what the sales lady gave me, which was medicated chick starter (small bag). My chicks are going on 3wks old and have almost finished their first bag. I did not get medicated to replace it, even got a different brand. Hopefully I won't regret my choice. I've seen a lot of people say they don't medicate when there isn't a reason but in my eyes its the same as me giving my child vaccinations, it's just a precaution. I don't see how it would cause the chicks harm.
Katie