I was buying feed at Agway today and I wanted some grit suitable for my 7-week-old chicks. There were 2 containers with grit, one labled "Chicken Grit" and the other "Calcium Chips." The lady told me that: a. the oyster shells would "make the eggs stronger." I thought it was the calcium in them that makes the shells, correct? I read in a chicken care book that too much calcium in young chicks was bad. Can I use calcium chips or just contine feeding them treats during free-ranging when they can pick up pebbles? Also, do they usually need grit for grower mix? b. my chicks were not old enough to have grit. (again, they are 7 weeks old.) I have read in a number of places that they can have grit at a very young age. I told her I gave them tomatoes and apples and she just replies, "That's fine. Don't feed them grit." I also thought that anything other than chick crumbles, worms, bugs, yogurt, and a couple other things required grit. Thanks to all who guide me, that lady confused me.