AquaTop's realistic Coral 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 won’t discolor your aquarium water. Sizes range from 1inch to 9inch Inches high. Decoration is made of fish-safe materials and is suitable for both freshwater and saltwater use. Adds a natural look to aquariums. Gives fish a place to hide. Made of lightweight nontoxic polyresin. Highly detailed with vibrant colors Won’t change the water chemistry. Can be used as a live coral substitute in saltwater applications.