100% brand new and high quality Increase oxygen levels, lower CO2 and raise PH. It is an important instrument to successfully keep aquatic fish for respiration process. Durable, washable and sintered by high temperature. Creates bubbles in fish tank while attached to an air pump(air pump is not included). Creates water currents and dazzling underwater scenes. Color:green,orange Material:Silicon carbide &Plastic Note:Before using this product soaked in water for 15 minutes. Long-term use, such as dirt blocking, reducing the bubble, You can repeatedly cleaned Note: Size for manual measurement, there may be a 0 to 2 cm error, belongs to the normal phenomenon. And due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1Pc x Air Stone

• Increase oxygen levels, lower CO2 and raise PH. It is an important instrument to successfully keep aquatic fish for respiration process.
• Creates bubbles in fish tank while attached to an air pump(air pump is not included). Creates water currents and dazzling underwater scenes.
• Long-term use, such as dirt blocking, reducing the bubble, You can repeatedly cleaned
• Material:Silicon carbide &Plastic
• Note:Before using this product soaked in water for 15 minutes.

Increase oxygen levels, lower CO2 and raise PH. It is an important instrument to successfully keep aquatic fish for respiration process.LAY'S