Fish Concentrate can be used to improve soil structure and fertility in all soil types. It is made by cold fermenting salt water fish waste which has had the biodynamic compost preparations 502-507 added to aid in the composting process. This product contains many minerals and small amounts of a wide range of trace elements that are readily available to the plants. It also provides a natural source of nitrogen; encourages photosynthesis; encourages microbial activity, beneficial fungi and earthworms; provides minerals, vitamins, oils, proteins and trace elements and it increases resistance of plants to adverse environmental conditions.