Air stones are widely used in aquariums and other water systems like hydroponics, ponds, etc. to add oxygen and circulate nutrition. Since oxygen is an important element for every water system, including one air stone helps to maintain the desired level of oxygen in the tank, nurturing the fish and plants and helping them grow better. Air stones produce fine bubbles for oxygen replacement and extend the life of the nutrient solution. They also help in keeping the roots healthy. The cylinder is designed in such a way that more bubbles are produced.