I just bought more regular starter food for my 6 or 7 week old chicks. After I got home I realized that I had bought Medicated starter for them when I first bought them, they were then about 1 to 2 weeks old. I just today bought 2 1 day old chick to eventually put with the others, should they be on Medicated starter food or is regular starter OK?? New to all this, and thanks in advance for the advice!!