Nourish™ is a specialized supplement designed to meet the comprehensive nutritional needs of freshwater ornamental fish, particularly in long-term closed system environments. This formulation contains potassium iodide in a rich base of spirulina and chlorella, two algae known for their high concentration of essential amino acids and vitamins. The inclusion of iodine is particularly important as it supports the biosynthesis of thyroid hormones, thyroxine and triiodothyronine, which play critical roles in regulating metabolism and overall fish health. While Nourish™ can also be used for marine ornamental fish, it is specifically tailored to enhance the well-being of freshwater fish. This supplement addresses common nutritional gaps that may arise in closed aquarium systems, providing a vital source of trace elements and supporting long-term fish vitality and growth.