The ““““fine bubble””” cell plate produces fine air bubbles. Beautiful bubbles will also make oxygen renewal vigorous. It helps to increase oxygen, keep the air fresh and creates a healthy environment for fish. “““Silent Design”””” Aerobic Bubble Oxygen is a silent design. It is powered by a pump and makes full use of the power of the gas spring. It has no power device and no noise when working. Even if you sleep, it will not affect not. The ““““adjustable””””" bubble stone has a rotating design. Bubble size and density can be adjusted arbitrarily. Add different effects to your aquarium. “““Suction cup design”””" The superior suction cup design is used to fix the air stone, prevent friction and wear, and extend the service life. “““For Different Occasions”””" Aquarium Oxygenation Bubble Stones can add airflow, circulation to your aquarium, pond, hydroponics and aquaculture to oxygenate the water at the benefit of aquatic life.