Fish Tank Refiner Check Valve Co2 Refiner Carbon Dioxide Refiner Glass Refiner

Item Name: Fish Tank Refiner Check Valve Co2 Refiner Carbon Dioxide Refiner Glass Refiner. Product name: co2 glass refinerColor: transparentSet: 1 glass refiner, 1 suction cup, 1 check valve, 1 glass U-tubeWeight: 50gMaterial: glassPackage Include:1 set of Carbon Dioxide RefinerNotice:It's best to soak it before use or fill the cup with water and hang it upside down in the cup. You can use it when there is water in it. *Please make