Novices need to pay attention to choosing a fish tank when raising fish for the first time, and then do a good job of opening the tank and raising water before raising fish. The choice of fish tank is usually related to the fish to be raised. The bigger the fish, the bigger the fish tank, so as to ensure that the fish can swim. Opening the tank is a necessary step before raising fish, and it is necessary to disinfect the fish tank with potassium permanganate and other drugs. Then we should cultivate nitrifying bacteria, pour the culture solution every week, and turn off the lights and explode oxygen to accelerate its reproduction.

1. Filter: The essential equipment in the fish tank is filter, which is responsible for maintaining the water quality of the fish tank and is especially critical to the health of fish. Usually, the filter is divided into upper filter, bottom filter and filter cartridge, among which the bottom filter is used for large fish tanks, while the general small fish tanks can use upper filter, while the grass tank is more suitable for external filter cartridge.

2. Oxygen pump: Oxygen pump is also a very important equipment for raising big fish in fish tanks or when the feeding density is relatively high. It can supplement oxygen to the water body so that the fish can breathe better, otherwise there will be floating head phenomenon. However, for fish tanks with small fish, the problem of not having an oxygen pump is not big.

3. Heating rod: If tropical fish are raised, heating rod is also necessary equipment, which can raise the water temperature and maintain the temperature within a certain range, so that the fish can grow better. Usually, the temperature should be controlled above 20 ℃. Below this temperature, it will affect the fish's activities and diet, and even cause it to get sick.