An aquarium round air stone is a device used in aquariums to aerate the water. It is typically made of porous stone or synthetic materials and connected to an air pump via a tube. When air is pumped through the stone, it produces a stream of fine bubbles that rise to the surface, providing several benefits.

Oxygenation; Increases the dissolved oxygen levels in the water, which is essential for the health of fish and other aquatic organisms.

Water Movement;Helps circulate water, preventing stagnant areas and promoting a more even distribution of heat and nutrients.

Aesthetic Appeal ; Creates a visually pleasing effect with bubbles rising in the tank.

 Noise Reduction ; Fine bubbles can reduce the noise created by larger bubbles from other types of aeration devices.