The Penn Plax Cascade Mini Hang On Aquarium Filter is the perfect choice for smaller aquariums and fish tanks.

This filter features an activated carbon cartridge that removes harmful chemicals, toxins, and odors from your small aquarium.

This filter also utilizes an internal sponge which optimizes colonization of beneficial aerobic bacteria while the polyfiber cartridge traps floating particulates, so there is mechanical, biological, and chemical filtration happening.

This hang on aquarium filter attaches easily to your tank by sliding over the edge of the glass.

A leveling device keeps your filter in position and the self-priming intake tube has a built-in extendable stem to allow placement of the intake strainer close to the bottom of most aquariums.

It also includes an adjustable flow control knob to reduce filtration during feeding times or as needed, and the quiet and efficient motor is maintenance free.

The Penn Plax Cascade hang on filter delivers up to 20 gallons of water per hour and is suitable for fish tanks up to 7 gallons and is suitable for both freshwater and saltwater tanks.

The Cascade Aquarium Filter Comes with activated carbon cartridges and is ready to use.