BMC composite microbial inoculum (powder) is a highly active composite microbial inoculum, which contains photosynthetic flora, lactic acid flora, yeast flora, fermentation system filamentous flora, bacillus group, can effectively prevent shrimp, crab, fish Aquatic products and aquatic plants are protected from fungal and bacterial diseases. At the same time, when diseases occur on a large scale due to improper management or bad weather, the use can effectively reduce the mortality of aquatic products and reduce losses. 　　Instructions: 　　Usually half a month to 20 days before the onset of aquatic products. Use this product when the water layer is about 50 cm, and pour 150-200 grams per mu. After 15-20 days, use the same method to pour again. 　　Storage and transportation: 　　Store in a dry, dark, rain, ventilated place, away from fire, food and children.