I love brewing all-grain but I feel that I could cut down on my costs significantly by purchasing some of my grain in bulk, storing it, and using it as needed. I know a lot of people do this but I'm not sure what the "proper" storage methods are for bulk grain.
I know I'd need to store it whole and crush it myself on brewday, which is fine. Are there recommended temperatures, moisture levels, etc. at which it should be stored, or is the usual "cool, dark, and dry" advice enough?
I'm thinking of keeping a bunch of American 2-row in a large rubber trash bin with a snap-down lid in my garage.