With 360° viewing and a built-in filtration system, the BiOrb aquarium displays fish with minimal maintenance. Made of Plexiglass for crystal-clear visibility and durability, this 30-liter tank (nearly 8 gallons) is larger than a traditional fish bowl and includes a built-in halogen light and a biological/mechanical/chemical filter cartridge that lasts six to eight weeks. Includes air pump, gravel, fish food, water conditioner, and more.