Add the Zoo Med Tag Mopani Wood to your aquarium for a hiding place for fish or a climbing place for reptiles and amphibians. The natural hardwood sinks easily into the water and will leach tannins to create clearer water in your tank. About Zoo Medical Labratories Zoo Med is the number one company for reptile products worldwide. They introduced the first American reptile vitamin in 1982 and today hold 8 reptile product patents and 9 aquatic product patents in the USA and internationally with more pending. Zoo Med invented UVB lighting for reptiles, back in 1993 and which since has become the standard worldwide for Zoos, Veterinarians and the reptile hobbyist. A wide variety of products make up the Zoo Med family including quality products for reptiles, amphibians, fish and birds. Available in a variety of sizes. Natural hardwood for aquariums or terrariums. Smooth surface, textured detail, and unique mottled color. Leaches tannins discolor water and reduce pH levels. Sinks immediately in aquariums and unlike driftwood.