Magic World Background is part of the Magic World theme for aquariums. The background measures 31" x 16" and is designed to fit a standard 29 gallon aquarium or can be cut to fit smaller aquariums. Includes application gel to clarify scene on background for sharper image. Tape should be used to secure background when applying. Also available in the Magic World theme are Left Owl Decoration, Right Rock Decoration, Crystal Ball Center Piece Decoration and Gargoyle and Fish Combo Pack. H2Show Bubble Maker and LED lights can be used with the center piece decoration or individually for spectacular visual effects. LEDs are available in the following colors; Blue, Red, Green, White and Multicolor.