I have been looking for smaller sized grit for my quail and can only find chick grit. It seems to only be sold in 5# bags and now I can only find it with probiotics. Here are pix. Will this be okay for them or can I just give them crushed granite grit I have for the chickens? It’s $7 for this 5# bag and the other stuff I already have cost only $10 for 50#.