Made from fresh fish remains. It is made by a unique cold process that protects the vitamins, amino acids, enzymes & growth hormones. It also contains all the micro and macro nutrients naturally found in fish. They are in a chelated form so they are readily available to plants. This is an excellent liquid fertilizer for all your plants needs. Can be used as a foliar spray, in drip line irrigation systems or watered directly on to plants. Will not burn. The product has been screened down to 150 microns so it will not clog your drip line system. It is recommended to flush the system with fresh water after fertilizing. The N-P-K ratio (%) is 2 - 4,2 - 3 respectively.