Add color-changing LED light sticks to your aquarium to create the ultimate GloFish environment! The GloFish 10-Inch LED Light Sticks include white and blue LED lights for aquariums up to 20 gallons and can switch between 2 light modes. In Sunlight Mode with white & blue lights, the vivid colors look great with any décor and fish. Moonlight Mode uses blue lights, making GloFish décor and fish fluoresce even more brilliantly. To make any aquarium a GloFish aquarium, quickly install the light sticks by clipping them into the front of the aquarium frame. Add the universal use light sticks to any framed aquarium. They work with light hoods or glass canopies with a rectangular shape. In the box, you'll also find frame clips, cord routing clips, light switch, low-voltage transformer, hanger for drip loop and safety manual.