Aquatop CAF Sponge Filters!

With an airlift system, super biochemical 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 material resulting in a cleaner living environment for your fish. Particularly useful as a breeding filter or as a secondary filter. It will reduce noise from the air pump and consumes low wattage. Most fit external or top filters as a pre-filtration unit. No dead spots in cylinder foam offering full filtration. Features:   For freshwater and saltwater aquariums   Install with either an air pump or a powerhead   Provides reliable filtration in fry aquariums and quarantine systems   Add extra biological filtration in heavily stocked aquariums   Models designed for virtually any size system Specifications? CAF-10 Sponge Filter Weighted Up to 10 Gallons 60 Pores/Linear Inch Base Diameter: 2.00 inches Sponge Diameter: 2.00 inches Uplift Tube Height from Top of Filter: 1.50 inches Sponge Height, Base to Top: 1.75 inches Full height w/ Sponge and Uplift Tube: 3.50 inches Uplift I/D: 0.56 inches (9/16) Specifications: CAF-25 Sponge Filter Weighted Up to 25 Gallons Base Diameter: 2.75 inches Sponge Diameter: 3.125 inches Uplift Tube Height from Top of Filter: 3.00 inches Sponge Height, Base to Top: 3.50 inches Full height w/ Sponge and Uplift Tube: 6.75 inches Uplift I/D: 0.75 inches 40 Pores/Linear Inch Specifications? CAF-40 Sponge Filter Weighted Up to 40 Gallons 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: 3.50 inches Full height w/ Sponge and Uplift Tube: 6.75 inches Uplift I/D: 0.75 inches Specifications: CAF-60 Sponge Filter Weighted Up to 60 Gallons 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