It is better to disinfect the new fish tank, which is often safer. The disinfection method is also very simple. It only needs to be soaked in potassium permanganate for a period of time, usually for several hours. After that, in order to avoid drug residues, it is best to wash it with clear water several times before it can be used to raise water. Only after the water is well raised can fish be prepared.

1. Raising water: The first step of opening the new fish tank is to raise water. Generally, the water used is tap water. After connecting the water, it should be put in a sunny place to bask in the sun. The purpose of doing this is to volatilize the residual chlorine in the water so as not to affect the health of fish. In addition, it can also oxygenate the water, which can improve the dissolved oxygen in the water and provide a better living environment.

2. Culture: The purpose of culture is to establish nitrification system. Nitrifying bacteria are an indispensable part of fish tank. They can transform ammonia nitrogen produced after decomposition of organic matter to prevent fish from being harmed. The method of culture bacteria is to turn off the lights and explode oxygen after pouring the culture materials, because nitrifying bacteria are aerobic bacteria, and oxygen explosion can promote their reproduction. Usually, the water body will become turbid first and then clear, which means that the culture of bacteria is completed.

3. Put fish: In order to ensure that the water in the fish tank is suitable for fish farming, it is best to put a few fish in the tank to give it a try. If the fish in the tank can be raised alive, and then buy the fish you want to raise, if the fish in the tank can't be raised alive, it is necessary to check what goes wrong and then prescribe the right medicine.