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. Adding oxygen in the aquarium is essential for the better growth of fish and plants. It helps to keep the roots healthy in the hydroponics system and ensure that the fish get enough oxygen and nutrients. Ring Air Stone works well in both freshwater and marine water aquariums.