Colour:L Quantity:1 Welcome to my store, Hope you have a pleasant shopping trip! Specifications:Push pressure: 0.8Kg/cmMaterial: acrylic + ceramicRefinement piece: replaceable Stopping method: external stoppingSmall cup refinement piece diameter 1.6cm/0.6 inch, suitable for small aquariumLarge cup refinement piece diameter 2.4cm/0.9 inch for medium and large aquascape; height 12.5cm/4.9 inchExternal air tube: inner diameter 4mmx outer diameter 6mm(3/16" inner diameter)Suitable for fish tank: small cup suitable for fish tank within 50CM length; large cup suitable for fish tank within 120CM lengthPackage List:1 X Aquarium CO2 Diffuser (with finesse piece)1 X Check Valve2PCS X Suction Cup1 X Anti-slip Rubber RingNotes:1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures.2. Please allow 1-2cm slight dimension difference due to different manual measurement. Nano-ceramic refiner, the effective gas area is large, the effective gas area is 1-third larger than similar products, increasing Co2 diffusion area, which is conducive to aquatic plant absorption and photosynthesis. The top cover is designed to avoid large bubbles. Micro-hole atomization bubble dispersion, uniform size, fine, low resistance atomization, enhance the solubility of CO2 in water. The first time you use the refiner, you need to soak it for 1-2 days, so that the refiner can be fully soaked and open the pores, then the air will become normal. The CO2 refiner needs to be used with a CO2 system, which requires a push pressure of 0.8KG or more. It is good atomization and refinement, and provides sufficient CO2 to help aquatic plants absorb and grow healthily by photosynthesis. SHOP WITH CONFIDENCE: To provide you with the highest quality service, If you have any question, please feel free to contact us.We will provide after-sales service until you are satisfied. See more product details Nano-ceramic refiner, the effective gas area is large, the effective gas area is 1-third larger than similar products, increasing Co2 diffusion area, which is conducive to aquatic plant absorption and photosynthesis. The top cover is designed to avoid large bubbles. Micro-hole atomization bubble dispersion, uniform size, fine, low resistance atomization, enhance the solubility of CO2 in water. The first time you use the refiner, you need to soak it for 1-2 days, so that the refiner can be fully soaked and open the pores, then the air will become normal. The CO2 refiner needs to be used with a CO2 system, which requires a push pressure of 0.8KG or more. It is good atomization and refinement, and provides sufficient CO2 to help aquatic plants absorb and grow healthily by photosynthesis. SHOP WITH CONFIDENCE: To provide you with the highest quality service, If you have any question, please feel free to contact us.We will provide after-sales service until you are satisfied.