Aquatic nutrient cycling is the process through which nutrients like nitrogen, phosphorus, and carbon are recycled and transferred within aquatic ecosystems. In aquaculture, nutrient cycling helps maintain water quality by preventing nutrient overloads that can lead to harmful algal blooms and oxygen depletion. Proper management of nutrient cycling ensures that nutrients are balanced and used efficiently by aquatic plants and animals. In wild aquatic ecosystems, nutrient cycling involves natural processes like the breakdown of organic matter, which releases essential nutrients that support aquatic food webs. By enhancing nutrient cycling in aquaculture, the sustainability of production systems is improved, reducing the need for chemical fertilizers and supporting healthier aquatic environments.