Zoo Med ReptiSand Substrate - Natural RedZoo Med Natural Red ReptiSand is a natural, beautiful terrarium sand that meets the needs of a wide variety of desert dwelling reptiles, amphibians and arachnids. The vibrant red color of this pure, fine quartz sand is completely natural, with no added dyes or chemicals. When in your pets habitat, ReptiSand simulates the native environment and encourages digging, burrowing, and other natural behaviors for your pets health and your enjoyment. Pure,