Clscea External Inline Co2 Diffuser Atomizer Aluminum Alloy For Planted Aquarium 12 Mm

External CO2 diffuser less stuff in your aquarium inline design for use with canister filters. 2 sizes available 12mm and 16mm (water hose size). Adjustable connection direction supporting horizontal or vertical connections; Unique design that does not block the water flow at all; A transparent observation window allowing you to see directly if the diffusion is going well; Replaceable high quality diffuser disc produces ultra fine mist and achieves higher dissolution rate. Made of high strength aluminum alloy with anodized treatment for corrosion resistance. Comes with 2 hose clamps and 1 screwdriver.