Penn Plax Smallworld Filter Kit

This filter uses carbon and sponge cartridges to remove dirt and waste from the aquarium, designed for aquariums and tanks up to 5 gallons. In addition to our Smallworld, New World, and Betta World habitats, this filter is compatible with other tanks in the market. It fits all shapes and sizes, and also mounts securely to glass, acrylic, and plastic surfaces.