Function: CO2 Diffuses Tiny Into the Water Through the Atomisation of the Diffuser, Improves the Growing Environment of Aquatic Plants in the Fish Tank, Promotes Photosynthesis of Aquatic Plants and Facilitates the Healthy Growth of Aquatic Plants in the Fish Tank, Comes With A Bubbler. With A Bubbler: CO2 Diffuses Tiny Into the Water Through the Atomisation of the Diffuser, Improves the Growing Environment & Promotes Photosynthesis and Facilitates the Healthy Growth of Aquatic Plants in the Fish Tank Easy To Install & Use: The CO2 Diffuser With Strong Suction Cups Can Be Firmly Fixed on the Inner Wall of the Aquarium. The Low Resistance Fog Generator Can Be Easily Pushed Straight. High Efficiency: The Tiny Holes on the Nano-ceramic Finer Piece Make the Air Uniform and Fine, and the Dissolution Rate Is High. And Eliminates the Process of Soaking before Use. Stable Structure to Avoid Water Backflow. Color:As Shown Material:Glass Package Contents: 1 * CO2 Diffuser Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.