Key features

• •Provide both mechanical and biological filtration.
• •Simply install an airline into the unit and provide both aeration and filtration for your fish (Air pump sold separately). Aerobic bacteria colonize the sponge providing a bacterial substance to facilitate the nitrogen cycle.
• •Sponge + Ceramic multi layer design. The sponge traps larger waste particles mechanically cleaning the water without trapping baby fish. The porous ceramic material is an ideal home for the cycle bacteria to colonize.
• •Product dimensions: 2.76"W x 7.48"H; sponge and ceramic compartment dimensions: 1.73"D x 4.6"H. They are useful for as breeding filter or as secondary filter. Or they can be used as pre-filtration unit by fitting to an external or a top filter.
• •Max tank size up to 25 gallon. Package includes: 2 pcs of Sponge filters.