My chicks are now 6 weeks old and I * should * switch them to a grower feed, but I've got a LOT of chick starter feed still. Can I just mix some of the starter feed with the layer feed and give that to them? Or add grains to their starter feed? Can they get over medicated by continuing to eat the starter feed? (I didn't really want their feed medicated, but there was no other kind of starter feed available) I'm hoping not to have to buy the grower feed when I've got so much starter feed still. Any thoughts? Thanks!