Features:

The aquarium filter is made of high quality acrylic, transparent and good looking.
Biochemical sponge filter provides biological filtration to the aquarium, helps to stable water quality.

Increase the oxygen solubility in water.

With weighted base, so it can sink in water immediately.

Double filtration, high density filter cotton, providing more culture space, easy to replace.

Speicificaitons:

Product name: Aquarium Sponge Filter

Color: transparent

Size: 6.3cmx9.5cm for small size, 7.5cmx11cm for large size

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