Ideal for application in fresh, marine or reptile environments, the Fluval Underwater Filter provides superior water quality - even in shallow tanks! The Underwater Filter features a flip-top lid for easy maintenance, and can be placed vertically or horizontally depending on water levels. This filter is a popular choice when creating features such as waterfalls.
|U1||Up to 55 L (15 US gal)||250 L(65 US gal.)||5 W|
|U2||45 to 110 L (12 to 30 US gal)||400 L(105 US gal.)||5 W|
|U3||90 to 150 L (24 to 40 US gal)||600 L(155 US gal.)||7.5 W|
|U4||130 to 240 L (34 to 65 US gal)||1000 L(260 US gal.)||12 W|