Making soil with chicken grit
I remember reading somewhere one can make a good homemade C&S soil using "chicken grit". I am considering creating an outdoor, full sun C&S display in a 5' diameter round galvanized container, about the size and shape of a small "kiddie pool".
There is an ag supply place nearby that sells 25 pound bags of what they call "chicken scratch" (grit, not food) for about $10.
Would any sort of "chicken scratch" sold be viable for this purpose? And what should I compound the chicken scratch with to make a complete soil? Do I need to wash it first?
And of course- does this seem like an idea that will work?
Thanks in advance for your replies.