Mr. Aqua’s CO2 Turbo Diffuser has a patented power scatter design that provides a fast, effective way to diffuse carbon dioxide into the water for plants. The powerhead driven atomizer and patented multilayer compression design allows the CO2 to mix faster into the water in half the time of regular diffusers. The Turbo CO2 diffuser creates the maximum atomization of CO2 allowing you to utilize less CO2 daily, which saves you money in CO2 costs over time. Rated for aquariums up to 150 gallons Use with bubble counter of your choice Small compact design Turbo CO2 Atomization Dimensions: 8 x 2.75 x 5.25 in