Right now is day 18 of incubation I am a bit concerned. I have the eggs in cartons right now but I am not sure if I should keep them in cartons or put them on their sides. Also, I have some left over duck starter (actually alot of it!) could I feed chicks that? Because I am only doing chicks this time then going back to ducks so I dont feel the need to buy a huge bag of chick starter since I give them back to the farmer in a week anyways.. Thanks!