If the fish is anoxic, the fastest way to give first aid is to use an oxygen pump to give oxygen to the fish. If the temperature is too high, the dissolved oxygen in the water body is low, so it is necessary to cool down the fish tank, such as throwing a few pieces of ice in the water, so that the dissolved oxygen can rise when the water temperature drops. If you don't have an oxygen pump, you can also use a straw to blow air into the tank, or use a needle to pump water, which can also increase the oxygen content.
1. More fish: The number of fish depends mainly on the size of the fish tank. If the fish tank is not large and the breeding density is high, the fish will easily suffer from hypoxia. In view of this situation, we must reduce the number of fish in the tank in time, or change a slightly larger tank. If there are too many aquatic plants planted in the tank, some of them can be pulled out.
2. Too low air pressure: This situation is easy to occur in summer or overcast and rainy weather. On the one hand, the air pressure is low, and on the other hand, the temperature is high. Both of them will affect the dissolved oxygen in the water body, thus causing the fish to lack oxygen. In this case, the best way is to give oxygen to the water, usually 4-6 hours a day.
3. Water quality aging: If the water is not changed for a long time, the water quality aging will also lead to the reduction of oxygen content. At this time, what we need to do is to extract part of the old water, and then inject new water, which can increase oxygen in the process of water injection.
