My husband dug the post holes today for the run! I called about sand... We plan on about 300 square feet for the run. How deep should the sand be?? I told the guy 2-3 inches and he said we would need 5-6 tons of sand. 13.50$ per ton (delivered). Our coop is about 11 x 12. Based on this we could have 30 chickens max. (That seems like that would be a LOT of chicken in there though) so I thought we should make the run 300 square feet. I know the rule about 10 square feet per chicken but in your EXPERIENCE (I have none) do you realistically need more or less than that?? Thanks! Anne Please answer if you know! I have to call the sand guy before the posts can be cemented!