I have 2 four week old chicks who are currently living inside with about an hour in a run on the grass a day allowing them to meet my older hen. They're on chick crumbs with the odd meal worm etc. Do they need grits as well?ive heard people on here talk of chick grit but I can't find anywhere that sells it. If I give them normal grit will they just pick out the small bits they need and leave the bigger bits and the soluble grits which I think are harmful for them?