I see a lot of conflicting threads on here on many topics. I know there is more than one way to do things because everybody is different. That being said I have 2 week old chicks. In a make shift plastic tub brooder in my bedroom. With a 60w plant light currently maintained at 85 degrees. Pine shavings as bedding. On unmedicated chick feed. They seem healthy and happy. Now I read that they only need grit if they are eating things that need to be broken down. I understand the whole crop concept because I have a 13 year old Blue Front Amazon as well. I had purchased a bag of chick grit, but was just wondering when I should introduce them to it. I plan on having the outdoor coop ready by their 6th week. That should be up sometime in October. I plan on using vinyl floor w pine shavings in the coop as well as pine shavings in the nesting boxes. For the run I am thinking about some dirt, DE, and coarse sand w pea gravel mix. I live in Brooklyn, NY so the weather will be getting slightly cooler by then. I've read they'll naturally pick up any such natural grit from the run, but I was wondering if maybe I should give'em a lil days prior to re-locations. Thoughts?