Premium black aquarium background glass film. it is sure to create a lifelike effect for your fish tank. Combine our fish tank wallpaper with all kinds of fish tank decorations and make your aquarium theme even more stunning. Aquarium poster is made from thickened PVC. It can hide ugly hoses, cords, tubes, filters and pumps behind this aquarium wallpaper. it is waterproof, non-glare, not easy to fade and durable. Several sizes of background posters fit most tank. Include 27.6 x 11.8 inch, 39.4 x 17.7 inch, 51.2 x 19.7 inch, 74.8 x 23.6 inch. Installation instructions for the static cling aquarium backdrop. 1. Please choose the length and height of the background must longer than the length and height of your fish tank. 2. Clean the fish tank with water to keep the surface free of dust. 3. Remove the transparent protective film from the surface of the fish aquarium background. And spray water on the background. 4. Use cards to scrape out bubbles and water droplets. 5. Trim the background beyond the aquarium. This product is static cling. It can be easily removed and reused. If you have any problem with this product. Please feel free to contact us.