My chicks are 7 weeks old. At 5 weeks I took them off chick crumbles and put them on layer crumbles. I thought that was next. I was reading something here that was talking about grower pellets, is that what they should be on? Plus, I got scratch and it was only 2 grains: corn and oatmeal. Is that right? I thought there would be more grains. I got them small grit then the guy at the feed store said they don't need, only when they start laying. Please let me know if I am doing right.