The GloFish 5 Gallon Desktop Aquarium Kit contains everything you need to get started with your GloFish experience. Perfect for beginners and hobbyists alike, this complete kit features a glass aquarium, LED lighting system and Tetra Whisper Filter. The filter includes a medium Tetra Whisper BIO-Bag Filter Cartridge to help you create a thriving environment for your GloFish fluorescent fish. The glass aquarium is brought to life with the energy-efficient GloFish Cycle Light. The kit has four light modes. Moonlight mode with all blue 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. The hood reduces water loss from evaporation and helps keep fish from jumping. Hidden filtration provides an effective combination of mechanical and biological filtration for a healthy and clean aquatic environment.