Suggested Retail: $23.69. Aquarium Stainless Steel CO2 Diffuser Atomizer with Integrated Check Valve for Rimless Tanks - This CO2 diffuser is made of reliable 304 stainless steel, providing high bending resistance and anti-corrosion properties. It fits 4/6mm (3/16 IN Inner Diameter) CO2 tubing and features an injection-molded ceramic plate for superior sealing and fine, dense mist production. It offers high CO2 dissolution rates, and the ceramic disc can be cleaned or replaced. The diffuser has an innovative Quick Plug connection design for easy installation and a built-in check valve to prevent backflow. It requires at least 3kg/cm² (43PSI) working pressure for optimal operation and is suitable for pressurized CO2 supplying systems. -- LOT STICKER: BB-BOX-BOXBB001762-ITEM-60d66a94___LPNPMBV5014006 Clscea Aquarium Stainless Steel CO2 Diffuser Atomizer with Integrated Check Valve for Rimless Tanks 30cm -- SIZES ARE ESTIMATED. 7 CALENDAR DAY FULL REFUND GUARANTEE (FROM PRIMARY PICKUP DATE) ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 CALENDAR DAY STORAGE (FROM PRIMARY PICKUP DATE) IS ALSO AVAILABLE. THE PRIMARY PICKUP DATE IS THE DAY AFTER THE AUCTION ENDS. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.