Features:
This Fish Tank Biochemical Filter Sponge can be used in sea water tank，
fresh water tank， aqua-plant tank. The size can be cut free as you need.
Thickening Biochemical Filter Sponge.
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 clean it every month.
Color: Blue
Size: Approx 49x49x1.5cm (L*W*H)

Package Included:
1Pc Aquarium Filter Sponge