• Our reef rocks are crafted from natural clay fired at high temperatures, offering exceptional permeability and bacterial cultivation properties. • Perfectly replicates the texture, pattern, and visual appeal of coral algae covering coral skeleton rocks. • 100% safe for all corals, fish, and invertebrates. • Surface structure allows coralline algae and corals to attach and grow naturally, just like on live rock. • Free from parasites, algae, and harmful organisms. • Can be shaped into eye-catching forms to create unique aquascapes.