The Fluval U3 Underwater Filter 800lph is ideal for use in fresh, marine or reptile environments. It comes complete with the Adjustable 3-Way Flow Control feature, 2 Foam Pads, 2 Poly/Carbon Cartridges, and BIOMAX Biological Rings
The U3 is suitable for aquariums from 90 to 150 L (24 to 40 U.S. gal.).