Feature: 1. ENHANCED OXYGEN CONTENT: Aquarium CO2 atomiser effectively provides carbon dioxide for aquarium fish and enhances the oxygen content of the water. 2. SUITABLE INTERFACE: Aquarium CO2 diffuser has a 16mm interface, suitable for all kinds of home aquariums, easy to install and convenient to operate. 3. EXCELLENT REFINEMENT: Aquarium carbon dioxide atomiser has excellent refinement effect, maintains a stable water environment and promotes fish breeding and reproduction. 4. ENHANCE THE ENVIRONMENT: Aquarium CO2 atomiser reactor enhances the ecological environment of the aquarium, promotes the growth of plants, and creates more beautiful water effects, suitable for home use. 5. SAFE MATERIAL: Aquarium CO2 atomiser diffuser is made of plastic, durable and hygienic, can be used for a long time. Specification: Item Type: Aquarium CO2 Atomiser Material: Plastic Pipe Diameter: External Diameter 22mm/0.87in, Internal Diameter 16mm/0.63in. Package List: 1 x Carbon Dioxide Atomiser2 x Refinement Accessories Note: All data are measured manually, and there are certain errors in the measurement results.