If a new fish pond has not yet been raised with fish, it is best to disinfect it with quicklime. This substance will produce a lot of heat when it meets water, and will also become strong alkali, thus having a killing effect on all kinds of bacteria in the fish pond. If you have fish, do not use quicklime, you can use bleaching powder or chlorine dioxide, but also pay attention to the concentration, too much will produce chemical damage, and even lead to the death of fish.
1. Water exposure: Before disinfecting the new fish pond, the water in the fish pond should be drained. The purpose of doing so is to find out the small trash fish and other aquatic animals in the pond, in order to prevent some species that are harmful to the cultured fish. After draining the water, the silt should be turned over, usually about 15 centimeters, and then it can be exposed to light, usually for several days.
2. Sprinkle medicine all over the pond: After being exposed to the sun, you can use medicine to disinfect. The commonly used medicines are bleaching powder and quicklime. Generally, you should put a little water first, not too deep, and then start sprinkling all over the pond. You need to use 80 kilograms of quicklime per mu. If you use bleaching powder, you need to use 12-15 kilograms. You should wear gloves when using it, so as not to cause harm to the human body.
3. Precautions: Be sure to pay attention to the weather when disinfecting. Generally, it is suitable to disinfect at noon on a sunny day. It is not suitable to disinfect in a rainy day. Otherwise, the efficacy of the medicine will be greatly reduced. Therefore, it is necessary to disinfect again.
