It is better to use oxygen in fish culture at night. Hypoxia is easy to find during the day and can be supplemented in time, but it is not easy to see at night. It is best to turn on the oxygen pump 24 hours a day, and its own power consumption is not high. If it is always turned on, it can avoid the occurrence of oxygen-deficient floating head. If you really don't want to keep it on all the time, you can drive it in stages, two hours in the morning, afternoon and evening, so as to keep sufficient dissolved oxygen, which is beneficial to the breathing of fish.

1. Improving dissolved oxygen: The most direct benefit of oxygenation is to improve dissolved oxygen in water. The oxygen content in water is high, and fish can breathe more smoothly. If there is lack of oxygen, it will cause it to float, and if it is serious, it will turn over and even die, so it is necessary to get oxygen at all times.

2. Improve water quality: The oxygen content in water body increases, which is also beneficial to the establishment of nitrification system. Nitrifying bacteria have a very positive effect on the water quality of fish tank, which can convert ammonia nitrogen into nitrate, thus avoiding fish poisoning, and nitrate itself is one of the nutrients of aquatic plants.

3. Chlorine removal by aeration: By pumping oxygen into water, the effect of chlorine removal by aeration can be achieved. Generally, the water used for fish farming is tap water. Although tap water looks clear, there will be residual chlorine in the disinfection process, which is harmful to the health of fish. Oxygen aeration can accelerate the volatilization of chlorine.