Why do you think its too fine?Ok I’m new to the chicken world so please don’t laugh at my ignorance lol do you mean that you add the horse pellets to the sand or??? we just bought 2 yards of sand and even though thecquarry said it was concrete sand. It seems way too fine . Ugh so I need to add something to it .
I think all* sand is good on a coop floor in warm and mild climates. if it gets very cold I would ad straw.
*Clean sand of course / not contaminated with chemicals or heavy metals. Thats why I prefer to use playground sand.