To raise fish in ponds, the right fish species should be selected first. According to different local conditions, the fish species selected are different. It is necessary to ensure that the local waters can feed this kind of fish and ensure that its economic benefits are good. After the fish species are selected, they should be purchased and ready to be released. Before putting in, we must do a good job of clearing the pond to avoid bacteria, fungi and other harmful organisms in the pond. After clearing the pond, proper fertilization can put the fry into it.

1. Bleaching powder: It is a common choice to disinfect ponds with bleaching powder. Its dosage is small, and its main component is calcium hypochlorite, which will produce a large amount of ecological oxygen when encountering water, thus achieving sterilization effect. Generally, 20 grams per cubic meter can be used, and its efficacy declines rapidly, so it is more suitable for fish farming in a hurry.

2. Quicklime: Quicklime is widely used for pond cleaning and disinfection. It is easy to obtain and the price is not high, so it is the best choice. After entering the water, this drug will undergo chemical reaction, produce strong alkali substances, and at the same time emit a lot of heat, so that bacteria, fungi and protozoa in the water can be eliminated. Usually, about 125-150 kg is used per mu of fish pond.

3. Tea withered: Tea withered has an effective disinfection effect, which is mainly used to eliminate some aquatic insects, snails and frog eggs, etc. It has no killing effect on bacteria and fungi, and can also promote their growth, so it is suitable for use only under certain conditions.