Changing water generally depends on water quality, and stocking density is related to temperature and feeding. Mainly depends on the water quality. Generally, disinfection is carried out before planting. The fry should be disinfected when they are put into the water. Unless there is a disease in the middle. Generally, there is no need for antivirus. If you want to breed, ask about the breeding varieties and benefits in other places. If you choose high-risk, different breeding varieties, low-risk and low-benefit, what is the breeding benefit? The net profit per mu is more than 10 thousand.
Those who engage in farmhouse music and fishing are all finished products bought outside and put in fish ponds. I see many people suggest going fishing, eating and listening to farmhouse music. I just didn't do this business. I just traveled and saw the surface. If it is not far from the urban area, or there are certain groups who like fishing around, we can develop professional fish ponds with fishing experience as the mainstay for them. Of course, the specific operation needs to be further improved in details. For example, fishing competitions.
If you are a beginner, I suggest you keep loach, because loach is very stable, resistant to breeding and easy to live. Even if there is power failure and lack of oxygen, it will not die, and it is easier to manage and the profit is optimistic. When the fry are young, sprinkle the soybean milk evenly on the surface of the fish pond with a spoon every day, once in the morning and once in the afternoon. Observe whether you have finished eating, so as to decide whether to increase the amount of soybean milk.
When choosing stocking varieties, we should consider the collocation of many varieties, especially those living in different water spaces, in order to make full use of water space and improve water productivity.