Features:

Activated Carbon sponge filter provides biological filtration to the aquarium, helps to stable water quality.

Slim design, the filter is hangable and with strong suction cups. It can save much space for your fishes.
Increase the oxygen solubility in water, effectively filter harmful substances and small suspended solids in the water.
Remove the odor. Keep your aquarium clean.
Working noiselessly. Detachable and combinable.

Good permeability, easy to clean.
Perfect filters accessories for your tank and aquarium.
Speicificaitons:

Product name: Aquarium Sponge Filter

Color: Grey

Model Number: PF20
Size for filter: 178mmx193mm for PF20

Reminder:

1. Soak the sponge in the aquarium water for 5 minutes before use, by doing this will help nitrifying bateria colonise easier.

2. Always use aquarium water under room temperature to rinse clean the sponge, never use hot water.
3. It must be used through connecting the air pump.

Including:
1pcs Aquarium Filter PF20