Aquarium Water Treatment -Aquarium Acrylic Co2 Diffuser Carbon Dioxide Atomizer Reactor 12mm Highlights Generic Brand Aquarium Acrylic Co2 Diffuser Carbon Dioxide Atomizer Reactor 12mm Description: Brand new and high quality. High quality polished stainless steel CO2 diffuser, durable and stylish, adding a beautiful scenery to your aquarium. Helps ensure plants receive adequate amounts of CO2, improves the growth and health of your plants with sufficient CO2 supply. Suitable for internal and external use. Note: The CO2 diffuser may release large CO2 bubbles during its first 1-3 days of use. When the ceramic disc becomes saturated with water, it releases fine bubbles of CO2, which is normal and may take up to three days. Specification: Material: Acrylic+Metal 12mm Size: LxWxDia.: Approx. 110x55x30mm/4.33x2.17x1.18inch Outer Dia: Approx. 12mm / 0.47inch Suitable for 16mm (internal diameter) pipe. 16mm Size: LxWxDia.: Approx. 135x55x30mm/5.31x2.17x1.18inch Outer Dia: Approx. 16mm / 0.63inch Suitable for 22mm (internal diameter) pipe. Package includes: 1 Piece CO2 Diffuser Note: Since the above size is measured by hand, the actual item size might be slightly different from the above size. Due to lighting effects, monitor settings etc. There could be a slight difference in the color tone of the pictures and the actual item.