GloFish Color-Changing Cycle LED Light. Switch between 4 modes to enhance the colors of your aquarium. Transform your aquarium in moonlight mode with all blue LED lights on, midnight mode with all black lights on, twilight mode with blue and black light fade or sunlight mode with all lights turned on. This unique light changes the viewing experience of your GloFish décor and enriches the colors of your fish in bold and exciting ways. The quick install helps make it easy and convenient to turn any aquarium into a GloFish aquarium. CYCLE LIGHT: Easily convert an aquarium into a stunning home for your GloFish fluorescent fish. FOUR MODES: Transform your aquarium in moonlight mode with all blue LED lights on, midnight mode with all black lights on, twilight mode with blue and black light fade or sunlight mode with all lights turned on. QUICK INSTALL: The quick install makes it easy and convenient to turn any aquarium into a GloFish aquarium. Clips onto the front frame of aquariums. BRINGING COLOR TO LIFE: GloFish fluorescent fish and products create a complete underwater fluorescent experience. Available in size: Up to 75 Gallon Aquarium