Potassium Fulvate is a functional aquaculture product based on naturally sourced potassium fulvate, designed for water fertilization and water-quality improvement in freshwater and seawater farming systems. It provides bioavailable organic potassium that can be readily absorbed and utilized by algae and cultured aquatic animals, helping promote beneficial algae growth and develop stable, desirable water color. After dissolving, it forms a mild colloidal system that helps buffer pH fluctuations, stabilize water quality, chelate or adsorb excessive heavy metals and suspended organic wastes, and provide a carbon source for beneficial microorganisms. By supporting the algae–bacteria balance, improving pond-bottom conditions, and enhancing the natural feed base, Potassium Fulvate helps create a healthier aquatic environment and indirectly supports the growth, stress resistance, and overall performance of fish, shrimp, crabs, shellfish, and other cultured species.