Offering outstanding 3-stage filtration, increased water movement and vital aeration, Fluval U-Series internal filters are the perfect solution where external filtration is not possible. New Sleek Design New Easy Grip Water Control Paddle New Redesigned Media Cartridge – Traps more debris Designed for aquariums up to 55 L Use as a primary filter for smaller aquariums, or supplementary filter for larger aquariums Position horizontally for shallow tanks, larger tanks with low water levels, or to create a decorative waterfall feature Position vertically against aquarium wall to create currents or customized flow patterns Convenient flip-top lid allows for quick and easy access to filter cartridge for maintenance or replacement BIOMAX biological media included Made in Italy Ideal for freshwater, saltwater and reptile environments 1 foam pad included