The most commonly used medicine for disinfection of fish ponds is quicklime, which is generally used when cleaning the ponds. It is usually disinfected with quicklime, mostly on sunny days, and after three days in the afternoon. If there is no water in the fish pond, each mu needs to use 70-80 kg of quicklime, if there is water, the dosage should be controlled according to the depth of water, one meter deep water, each mu needs to use about 100-150 kg.
1. Bleaching powder: Bleaching powder is a common disinfectant like quicklime. It has a killing effect on bacteria, fungi and viruses, and can also regulate pH. It should be noted that the stability of this drug is relatively poor, so the preservation must avoid light and heat, but also do a good job of moisture-proof work, otherwise it will lead to its failure.
2. Chlorine dioxide: Chlorine dioxide is a new type of disinfectant. It is characterized by low dosage and good effect. It can decompose the protein of microorganisms in the water body, thereby eliminating bacteria, viruses, etc., and is also effective for algae and protozoa. Its concentration is generally 0.5-2 ppm, usually there are two bags, mixed activation and then sprinkled.
3. Sodium dichloroisocyanurate: The state of sodium dichloroisocyanurate is relatively stable. When it is dissolved in water, hypochlorous acid will be produced, which will have a bactericidal effect.
