In recent years, with the substantial increase of aquaculture unit output, the input of aquatic products has also increased, which is easy to lead to water quality deterioration or pollution.

Especially in the late stage of feeding, the content of organic matter, ammonia and nitrite in water is high, which has a great influence on the normal growth of aquaculture products.

Photosynthetic bacteria have many different functions, such as nitrogen fixation, carbon fixation, sulfide oxidation and promoting the full decomposition of organic matter. After the photosynthetic bacteria are applied to the water body of the aquaculture pond, it can effectively degrade the residual organic substances such as bait and feces in the aquaculture water body, promote the circulation of organic substances by absorbing and utilizing harmful substances such as ammonia nitrogen, nitrite and hydrogen sulfide in the water body, achieve the purpose of purifying the water quality, and provide an excellent growth environment for aquaculture products.