Aquatic Life Expandable LED fixtures come in 24 inch, 36 inch, and 48 inch lengths, with a 460 nanometer, which is the actinic blue, or a combination of the four sixty plus 10k leds. The long lasting, energy efficient LED, produces a natural shimmer effect on the water, while enhancing the color of the fish. It has a broadcast reflector to diffuse the light evenly throughout the aquarium. It has an off on switch and a low voltage transformer and an adjustable frame. The expandable fixtures can be linked with up to four fixtures, and has a specially designed cover to cover the cords. For additional information on the products used in this video, please visit PetSolutions.com.