Features:

Biochemical sponge filter provides biological filtration to the aquarium, helps to provide stable and excellent water quality and oxygen levels.

Increase the oxygen levels when used with a air pump.

Quiet running , discreet , and 360 degrees adjustable.

Good permeability, easy to clean.

stick to the glass with suction cups.

Perfect filters accessories for your tank and aquarium.

Filter balls dont come with all modles. Please kindly note.

Speicificaitons:
Product name: Aquarium Sponge Filter
Color: black
Model Number: YU-118,YU-119, YU-228A,YU-229A, Ceramic Media Balls

Reminding: The filter cotton can be compressed and if you receive the foam deformed upon receipt, allowing it to be soaked in water and it will quickly regain its shape (please don't open the disputation first).

Size: as picture

Reminder:

1. Soak and squeeze the sponge in the aquarium water for a few minutes before use to help release air bubbles .

2. Always use aquarium water to rinse clean the sponge, never use hot water or tap water.

3. It must be used by connecting a air pump.