Aquarium Glass CO2 Diffuser Bubble Air Stone Purge Oxygen Aeration _x000D_ Features: _x000D_ This item will dissolve Carbon Dioxide (CO2) speedily into your aquarium or for tank. _x000D_ Tiny pores on the ceramic disc breaks down Carbon Dioxide into tiny stream of bubbles _x000D_ Suitable for use as a decoration or provides a good source of aeration for the for tank or aquarium _x000D_ Material: Glass _x000D_ _x000D_ Package Includes: _x000D_ 1 x Dissolved Oxygen Device, 2 x Suction Cup, 1 x Air Stone. _x000D_ _x000D_ _x000D_ Specifications: _x000D_ Material: Glass _x000D_ Color: Clear _x000D_ Length: 13cm _x000D_ Diameter: 4.5cm _x000D_ Quantity: 1 Set _x000D_ _x000D_ _x000D_ Package Includes: _x000D_ 1 Pc x Dissolved Oxygen Device _x000D_ 2 Pcs x Suction Cup _x000D_ 1 Pc x Air Stone _x000D_ _x000D_ _x000D_ Note: _x000D_ 1.Please allow 0-3cm error due to manual measurement. pls make sure you do not mind before you bid. _x000D_ 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! _x000D_ _x000D_ _x000D_ _x000D_