uxcell xinyou xy-380 aquarium fish tank biochemical sponge filter, 4-1/2-inch (3-pack)

biochemical sponge filter provides both mechanical and biological filtration. simply install an airline into the unit and provide both aeration and filtration for your fish. in addition, the 4 1/2 inch sponge filter traps waste particles mechanical. SKU:ADIB074PGXPC2

High-quality aquarium sponge filter for efficient biological filtration,Supports large bacterial populations to break down aquarium waste,Dense, high-quality foam ensure reliable longer lasting aquarium use,Do not trap fish fry and are safe for small size fish like dwarf cichlid, guppy, killifish, etc.,Sponge Filter Dimensions: 4.5"D x 8.0"H - Max tank size: 20 Gal.