Duetto Mini multi-function submersible Power Filter is perfect for all aquariums up to 10 Gallons. New to the Duetto family of compact submersible power filters, the ultra-compact Duetto Mini is a true mini-marvel. It combines silent, powerful filtration efficiency with adjustable flow control, operational ease and a multitude of interchangeable application options - from desktop aquariums to fountains to reptile/amphibian habitats. Its compact design and suctioned filter mounts facilitate vertical or horizontal placement in water depths of varying depth. Convenient filtration media cartridges are ready to use and change in seconds - no messy assembly.