Add this innovative light stick to your aquarium to create the ultimate GloFish environment. Switch between white lighting and the blue LED lighting to enhance the brilliant colors of GloFish fluorescent fish. Features: Enhances fishes environment Includes: 1 - Blue LED Light (waterproof), 2 - Frame Clip, Cord Routing Clips, 1 - Light Switch, Low Voltage Transformer Water Type: Universal use Color: Blue LED Light, (White lights not included). Dimensions: 8 inches Instructions: Use one for a 5 to 10 gallon aquarium. Use two for 20 to 55 gallon aquarium. Use with any light hood or glass canopy.