The GloFish 3 Gallon Betta Aquarium Kit contains everything you need to get started with your GloFish experience. This complete kit features an LED lighting system with both white and blue lights, and a 3-stage filtration for a clean and healthy aquatic environment. The filter cartridge floss screens out dirt and debris. The activated carbon inside filter cartridge helps remove odors, discoloration, and impurities. Bio-Foam creates a large, 3-dimensional area for cultivating aerobic bacteria, which helps eliminate toxic ammonia and nitrates. The sliding glass canopy is hinged for easy access.