An all-in-one aquarium that captures more of what you love. The CUBE was designed so you can keep more in your aquarium with less. Available from 10 to 20 gallons, the CUBE delivers an aquatic environment for novice and professional aquarium keepers. Overflow boxes are constructed entirely of glass with water-etched weir teeth. Features an adjustable return nozzle for precise water agitation. Includes a pre-seated, self-levelling foam mat, which keeps your aquarium level on uneven surfaces and reduces tension on the glass. Includes one 2.75” 225 Micron Filter Sock, also includes bio-balls, carbon and a filter sponge to keep your water clear and polished.