Medium Bubbles: Air stones with micro holes generate dense and abundant bubbles around the cylinders, increasing oxygen and benefiting aquatic life in your aquarium. MODEL: ASC-100, jet volume: 5 L/min, recommended air pump power: 7 W-12 W. Larger Size: These bubblers are 10cm in length and 5cm in diameter, suitable for multiple occasions like hydroponic systems, ponds, aquariums, aquariums, etc. Stable in Water: Each cylinder weighs 0.36 kg, which allows it to rest or stand firmly on the bottom of the tank when bubbling, providing a stable bubble release space. Easy to use: Soak it completely in water for 1 hour before use. Clean it with a brush because they clog after weeks or months of use.