uxcell XINYOU XY-380 Aquarium Fish Tank Biochemical Sponge Filter, 4-1/2-Inch (1-Pack)
Brand: uxcell
Color: Black
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.