Features:

Sponge filters provide both mechanical and biological filtration for the fish tank.

Simply install an air line into the unit and it mostly fit to external or top filtration system for pre-filtration purposes.

Aerobic bacteria colonizes on the sponge, providing a bacterial substance to facilitate the nitrogen cycle.

Multilayer sponge is easy to clean, providing larger surface area for filtration with no clogging.

Specifications:

Item number: XY-2820

Material: Plastic + Sponge

Size: about 13.5cm x 9cm x 5cm

Color: Black

Qty: 10 pcs