This
Fish Tank Biochemical Filter Sponge can be used in sea water tank,
fresh water tank, aqua-plant tank.
The sheet can be cut freely as you
need.
Thickening Biochemical Filter Sponge, tough and durable.
Good shading features, can reduce the algae breeding.
Moderately hole, can cultivate high density nitrifying bacteria.
Strong filterability, can stable water quality and reduce fish died.
Can be used repeatedly after cleaning.
Suggested to change it every month.
Color: black
Size In Inches 12'' x 9"
Size In Millimeters 305 mm x 230 mm
Thickness 20 mm
Bayer Bays 1 Sheet
Buy Three Sheets Get One For Free