I've got 3 buckets of a dolomite and crushed coral mix which is perfect for an African Cichlid tank. Not good for salt water tanks. All I ask in return is a bucket replacement for exchange of the gravel. No interest then it goes to Craigslist in a few days. I know someday I'll boot myself in the butt cause I still like Tanganyika cichlids and will set up a tank but for now the gravel in in my way and a small eye sore on the side of my house.