With an airlift system, super bio-mechanical sponge filter features silent operation and has an excellent filtering effect while oxygenating the water. The specially developed foam materials support the colonization of bacteria, allowing for mechanical and biological filtration, which will break down harmful ammonia and nitrite.
Features:

For Fresh and Salt Water Aquariums
Install with an Air Pump or a Powerhead
Provides Reliable Filtration in Fry Aquariums and Quarantine Systems
Add Extra Biological Filtration in Heavily Stocked Aquariums
Ideal Designed for Virtually any Size System

Technical Specifications:

Up to 60 Gallons
Weighted
40 Pores/Linear Inch
Base Diameter: 3.25 inches
Sponge Diameter: 5.00 inches
Uplift Tube Height from Top of Filter: 3.00 inches
Sponge Height, Base to Top: 5.50 inches
Full height w/ Sponge and Uplift Tube: 8.5 inches
Uplift I/D: 0.75 inches