Down To Earth Fish Powder 12 - 1 - 1Down To Earth Fish Powder 12 1 1 is a professional grade, water soluble nitrogen fertilizer derived from fish protein for supplementing plant nutrient requirements or correcting nitrogen deficiencies in all types of plants including vegetables, flowers, trees, shrubs, vines and turf grass. Our high quality fish protein concentrate is carefully produced through a unique process of natural enzymatic hydrolysis to provide maximum nutrient availability