When the fish hypoxia, usually floating head, some will spit bubbles in the surface, the only way to breathe. If the lack of oxygen lasts for a long time, the fish will become inactive. If the situation is serious, the fish will begin to tilt and even expose its belly. At this time, oxygen is needed in time to improve the dissolved oxygen content of the water body.
1. Open the tank to give oxygen: The first step in fish farming is to open the tank, and in addition to raising water, a nitrification system should also be established. The nitrification system relies on nitrifying bacteria, which absorb ammonia nitrogen produced by microorganisms decomposing organic matter and convert it into nitrite and nitrate, thus avoiding ammonia nitrogen poisoning fish. As aerobic bacteria, explosive oxygen is needed in the process of establishing nitrification system.
2. Daily oxygen: If the number of fish in the fish tank is too large, or there are a large number of aquatic plants in the tank, photosynthesis can also produce oxygen during the day, and at night, fish and plants will begin to compete for oxygen due to respiration, so it is also necessary to supplement oxygen in time. Usually two hours a day, if it is summer or rainy weather, you can extend the time a little.
3, sick oxygen: for sick fish, also need timely oxygen. On the one hand, increasing oxygen content can promote the metabolism of fish and help its recovery. On the other hand, medication is needed after illness, which will lead to a decrease in dissolved oxygen in the water body, so oxygen needs to be supplemented.
