Description: Made of high-quality glass material, which is not easy to crack or damage, wear-resistant, scratch-resistant, reusable, energy saving and long life service. The co2 diffuser provides rich carbon dioxide to the aquarium plants in the fish tank, ensures the nutritional absorption of aquatic plants, and creates a good aquarium environment. The gurgling effusion of tiny bubbles adds an element of , interest and movement to the aquarium. Efficient CO2 atomisation through ceramic membrane, makes the CO2 bubbles smaller, more fine and smooth, as well as well-distributed. Easily install the carbon dioxide diffuser, just use the suction cup (included) to fix it on the aquarium, and the position can be adjusted. Suitable for use as a decoration or provides a good source of aeration for the tank or aquarium! Specification: Material: Glass Size: 5x3.5x8cm/2x1.4x3.1inch Package Includes:(5 Pack) 1 Set CO2 Diffuser