The Tetra Waterfall Globe Aquarium is a 1.8 gallon crystal clear glass globe with an innovative waterfall feature. The kit contains a stylish black base with light arm, pump-driven integrated filter, bright white LED lights, and a single low-voltage power cord. The Waterfall Globe Aquarium uses the small Whisper Bio-Bag Cartridge. Setup guide included. Gravel, plants, and fish sold separately. Great for goldfish and small tropical fish like Guppies and Tetras (some species may require the addition of a small heater).