Our Temple Stone Ecoscape rock is not only an artistic choice for the home aquarium, but also a safe choice for both fish and plants. Our Temple Stone is a gorgeous matte grey with white striations that displays a beautiful contrast against most of the substrates used in the home aquarium. It is inert and will not alter pH or hardness. It comes in a variety of shapes and sizes handpicked by the Ecoscape team to give your aquarium a unique look.