Penn-Plax Undergravel Aquarium Filter for 40-55 Gallon Tanks – 40/55, Blue

Manufacturer: Penn Plax, INC. Manufacturer : Penn Plax, INC. PENN-PLAX presents the Clear-Free Premium Under Gravel Aquarium Filter. This Filter is air driven and utilizes an Air Pump (not included) to cycle crystal clear water throughout your aquarium, while keeping a crisp and neat look inside.

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