Hi all! I have 24 2-1/2 week old chicks, and I put a little container of "construction sand" in their brooder on Sunday when I gave them their first treats (berries, tomato, and mixed greens). I was amazed at how quickly they all scarfed the grit down (they liked the sand more than their treats)! Their little crops looked so full! I've been giving them treats every day since then, so this morning I gave them another container of grit, which again they finished off in about 2 minutes. Is it possible to give them too much grit? Should I just always have it available to them, or how often should I be giving them some? Thanks so much for your help!