In the process of aquaculture, the disinfection management of ponds is particularly important. Mastering the correct disinfection method can not only effectively prevent the growth of disease, insect and various harmful substances, provide a healthy environment for fish, shrimp and crab to grow, but also help improve the water environment. Therefore, regular disinfection management is very critical for the growth of fish, shrimp and crab.

In recirculating aquaculture, the commonly used sterilization methods are ultraviolet and ozone. The penetration of ultraviolet rays and the strong oxidation of ozone are used to eliminate bacteria, but these two sterilization methods are also a little defective. If the penetration of ultraviolet rays is not strong enough, bacteria can still self repair. Although ozone has good sterilization effect, too much residual ozone is toxic to fish. However, there is no need to worry too much about this. Generally, we don't need to kill all the bacteria in aquaculture. We just need to control the bacteria within a certain range to prevent bacterial riots. Generally, fish still need their own immunity, which is also a positive stimulus to fish immunity.

In the field of aquaculture and aquarium culture, two problems are usually encountered: the reproduction of algae in water and fish diseases. Most algae and bacteria and viruses that cause fish diseases can die and disintegrate within seconds under strong ultraviolet radiation, so these two problems can be properly solved by ultraviolet sterilization.

99% of bacteria and viruses in the UV sterilized and purified pool will be killed, so the fish will rarely get sick, thus increasing the breeding yield. For ornamental fish, the clean and sterile water will make the fish colorful.

Under the irradiation of sunlight or artificial light source, algae in water, such as blue-green algae, will multiply in large numbers. Algae will consume oxygen and nutrients in water, thus affecting the normal growth of aquatic animals. Ultraviolet light can solve this problem. The aquaculture water is repeatedly circulated through a closed sterilizer equipped with an ultraviolet lamp, and the algae in the water will disintegrate and die under the strong UVC ultraviolet radiation, reorganize into large molecular chains, and finally be filtered by the filtration system. In this reaction process, the flow rate of water and the power of the sterilization lamp are very important. In summer, when the temperature is high, the algae multiply rapidly, the flow rate of water should not be too fast, and the power of the ultraviolet lamp should be appropriately higher, and in winter, the opposite is true.