I need uniform rocks, with the same grain size and texture and the same general size as well. This is for putting in my cages that my starfish will be in, so that they can hind under them if they are scared, and sit on top of them if the water is stressing them out. I went to Fred Meyers in search of bricks, since that seemed to be the easiest way to get that. Instead I found something better, clay pot feet!!! Its awesome. They are the perfect size, and have a little spot under them that will give the little scared starfish a place to hide. And, they are three for 2 dollars...now thats my kind of price.