Create a unique look in your tank by using this BioBubble 3D Background Coral Reef. This item is a natural-looking, beautiful reef scene. BioBubble provides an interesting alternative and delivers a background that offers a simple and effective way to enhance the appearance of any aquarium. The 20-gallon fish tank background will make it look like your fish are swimming somewhere in the ocean. It is made with a revolutionary flexible, yet rigid, material. It is designed for you to be able to easily install it. Now your aquarium can be easily transformed into an eye-catching masterpiece.