Main effct: a,Improve the quality of water,reduce ammonia nitrogen,nitroso-nitrogen,organic substance and some poisonous substance,improve the color and transparence of water,increase dissolving oxygen of water,adjust PH value and reduce factor of sickness. b,Control the excessivelypropagating of harmful alga,promote growth of beneficial alga and protozoan that is a good natural biological nutritive material in water. c,Form advantageous species,maintain good breeding environment,protect water from propagating of harmful fungus,improve reaction ability,increase immunity and resistance to disease,increae ratio of feeding,surviving and growing velocity,augment the capacity and reduce the feeding period. d,Produce many digestive enzymes,vitamin,organic acid and unknown growth promoting factors,etc.in the intestines of aquatic product,reduce the nutrients consumption of harmful fungus,bring down the bait coefficient annd increase the productive efficiency. e,improve the quality of product,increase the protein by4-10%,and reducce the heavy metal and remained medicine to reach the request of green feed. Storage: store in shade,cool,ventilated and dry place.