CO2 diffuser, which provides a healthy environment for your fish and improves the growth and health of your plants with sufficient supply of CO2 Suitable for plants and aquariums Tube size: 4 mm x 6 mm , high resistance to bending, easy to install. Color: transparent Package included: 1 x glass CO2 diffuser, 1 x U-shaped glass tube, 1 x check valve, 1 x suction cup
