Fluval C-Nodes feature a complex pore system that allows beneficial bacterial to thrive. The star-shaped nodes provide more filtration surface area and more biological power than most biological media, resulting in superior water quality and a very healthy aquarium environment.
Key Features :

For Fluval C4 Power Filter
Complex pore system that allows beneficial bacterial to thrive
Star-shaped nodes provide more filtration surface area and more biological power than most biological media
Creates superior water quality and a very healthy aquarium environment
Net Weight: 200 g (7 oz),