Hi everyone. I have 6 chickens, all 8 weeks old. When I got them as chicks from the breeder, she said they had all been vaccinated for mareks, but not cocci, so I should get them on a medicated water solution right away (they don't sell medicated feed.) They did fine, and at the end of five weeks, as the bottle directed, I took them off the ampro. They were fine for about a week and then I noticed blood in the stools and they were acting sluggish. Now I'm treating with ampro again, and there is no more blood and the chickens seem fine. I am worried they aren't eating enough, though. I've never dealt with younger chickens before, so I am clueless as to what to do. Is this going to come back every time I take them off the meds?