Package Dimensions:11.9 x 8 x 3.4 cm; 30 Grams Size:L Quantity:1 batteries required:No Batteries Included:No Item Weight:30 g welcome to my store , Hope you have a pleasant shopping trip! Features: 1.Fish tank CO2 refiner, diffuser, accelerate dissolution in water to provide sufficient CO2 for aquarium plants, can better photosynthesis, and is conducive to the healthy growth of aquarium aquatic plants and water plants2.Crystal high-transparent acrylic material, High dissolved oxygen content, ceramic nano-fine sheet, microporous atomization bubble dispersion, uniform and fine bubble size, low resistance atomization, improve the solubility of CO2 in water3.Integrated bubble counter function, small size, does not occupy the volume of the fish tank, can be reused after cleaningLow maintenance, stable and reliable performanceSpecifications Material: High transparent acrylicSpecification:S diameter 20mm height 35mmL diameter 30mm height 40mmPackage List:1X Aquarium CO2 DiffuserNotes: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures.2. Please allow 1-2cm slight dimension difference due to different manual measurement." High Dissolved Oxygen Content, Ceramic Nano-fine Sheet, Microporous Atomization Bubble Dispersion, Uniform and Fine Bubble Size, Low Resistance Atomization, Improve the Solubility of CO2 in Water Integrated Bubble Counter Function, Small Size, Does Not Occupy the Volume of the Fish Tank, Can Be Reused after Cleaning Low Maintenance, Stable and Reliable Performance Crystal Clear High-transparent Acrylic Material, Does Not Affect the Fish Tank Landscape, Nano Process Manufacturing Fish tank CO2 refiner, diffuser, accelerate dissolution in water to provide sufficient CO2 for aquarium plants, can better photosynthesis, and is conducive to the healthy growth of aquarium aquatic plants and water plants SHOP WITH CONFIDENCE: To Provide You With the Highest Quality Service, If You Have Any Question, Please Feel Free to Contact Us.We Will Provide After-sales Service Until You Are Satisfied. See more product details High Dissolved Oxygen Content, Ceramic Nano-fine Sheet, Microporous Atomization Bubble Dispersion, Uniform and Fine Bubble Size, Low Resistance Atomization, Improve the Solubility of CO2 in Water Integrated Bubble Counter Function, Small Size, Does Not Occupy the Volume of the Fish Tank, Can Be Reused after Cleaning Low Maintenance, Stable and Reliable Performance Crystal Clear High-transparent Acrylic Material, Does Not Affect the Fish Tank Landscape, Nano Process Manufacturing Fish tank CO2 refiner, diffuser, accelerate dissolution in water to provide sufficient CO2 for aquarium plants, can better photosynthesis, and is conducive to the healthy growth of aquarium aquatic plants and water plants SHOP WITH CONFIDENCE: To Provide You With the Highest Quality Service, If You Have Any Question, Please Feel Free to Contact Us.We Will Provide After-sales Service Until You Are Satisfied.