Features:

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

Increase the oxygen solubility in water.

Working noiselessly.

Good permeability, easy to clean.

Perfect filters accessories for your tank and aquarium.
If the filter is without filter balls, it may float on the water. So filter with balls is recommended.

Speicificaitons:

Product name: Aquarium Sponge Filter

Color: Black

Model Number: YT-5002
Size for filter: 9cmx16cm

Sponge size: 9cmx9cm
With or withour filter media balls for your choice.

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 Biochemical Sponge Filter