Aquatop Premium Coral DecorationAquatops Vibrant Reef Decor makes the perfect addition to your aquarium by helping to create a natural look and feel, without affecting your water parameters. These life like ornaments are made from a non toxic polyresin that wont discolor your aquarium water and can also be used as an alternative to live corals in a saltwater aquarium application. Decoration is made of fish safe materials and is suitable for both freshwater and saltwater use.