1. Insufficient oxygen supply: The density of black shell shrimp is too high, and the oxygen content in the water is too low to provide enough oxygen for their breathing, which will lead to their death due to lack of oxygen.
2. Chlorine poisoning: If the tap water is not exposed to the sun, it will contain a lot of chlorine, which can not be directly used to raise shrimp. If the tap water is not dechlorinated to raise shrimp, black shell shrimp will be chlorine poisoning. If you want to use tap water to raise shrimp, you must first dechlorinate the water.
3. Unstable water quality: black shell shrimp is sensitive to water quality. If they are just put into water, they will die in a large area, probably because the water quality is unstable. At this time, you can plant some grass in the water tank, and then put the shrimp in it after the water environment reaches a balanced state.
Black shell shrimp breeding density determines whether to add oxygen to the water. If only one or two shrimps are kept in the water tank, there is no need to use oxygen. Just change the water regularly, and the amount of oxygen dissolved in the water is enough for them to breathe. If the number of aquaculture is large and the water tank is not very large, oxygen is needed, otherwise they will die because of lack of oxygen. When the breeding density is high, even oxygen can not meet their needs for oxygen. In this case, it is necessary to divide the cylinder, otherwise it will cause a large area of death.
