XINYOU Sponge Filter

Aquarists have been using sponge filters for decades and there's a reason these simple devices are so popular--they work! Sponge Filters are extremely simple to install and very ec onomical to operate. Each sponge filter supports the colonization of bacteria, allowing for mechanical and biological filtration. The process breaks down harmful ammonia and nitrite material resulting in a cleaner living environment for your fish. XY-2835: 2.5" Diameter x 3" Height XY-2836: 2.5" Diameter x 4" Height XY-180: 2.5" Diameter x 3" Height XY-380: 4.5" Diameter x 4.5" Height XY-2837: 6" Diameter x 6" Height XY-2838: 7" Diameter x 6" Height XY-2892: Corner Sponge 3.25" Diameter x 4" Height XY-2871: Sponge with Extension Pipe 3.5" Diameter x 9.5-12" Height XY-2872: Sponge with Extension Pipe 4.5" Diameter x 3.75-6" Height XY-2873: Sponge with Extension Pipe 4.5" Diameter x 9.5-12" Height Show more