Since I am going to be incubating and hatching eggs (hopefully hatching!) for the first time, I want to be prepared. When I have ordered day-old hatchery chicks, I have always had them vaccinated for Marek's and for Coccidiosis ahead of time. Do I vaccinate my new babies at home after they have hatched? If so, how do I do it? Will medicated Start and Grow cover all the bases?