The GloFish 5 Gallon Aquarium Kit contains everything you need to get started with your GloFish experience. It features a glass aquarium, LED lighting system, hinged hood, and Tetra Internal Filtration System with a medium Tetra Whisper Bio-Bag Filter Cartridge to help you create a thriving environment for your GloFish fluorescent fish. Choose between moonlight mode or sunlight mode using a combination of white & blue LED lights. The hood reduces water loss from evaporation. The Tetra Internal Filtration System provides an effective combination of mechanical, chemical & biological filtration.