1. Reduce pathogenic microorganisms and undesirable algae. Obviously enhance the immunity and disease resistance of cultured objects, reduce the incidence and improve the survival rate. The original solution of em bacteria can nearly double the survival rate of crab seedlings.

2. Increase the number of beneficial microorganisms, zooplankton and beneficial algae on the water surface, especially red worms.

3. Stabilize and improve water quality. The water body is bright in color and has no odor such as hydrogen sulfide and ammonia gas. The visibility is long and stable at 25-50cm, and the water change time can be extended by more than 2 times. Fish and shrimp manure, impurities at the bottom of the pool and leftovers will not become silt, but loose sand.

4. Promote growth and obviously increase the weight gain rate. Practice has proved that under the same environment, after using em bacteria liquid, it can be put on the market 10- 15 days in advance, and the average yield per mu will increase by 20%-35%, the spawning amount will increase by 25%, and the spawning time will be prolonged. Experiments show that the spawning time of em bacteria solution is prolonged by nearly 70 days after it is used in the new turtle pond at room temperature, and the hatching rate is good, and the bait has no peculiar smell, which improves the breeding environment.