much oxygen should be opened in the fish tank? Generally, oxygen in the fish tank can be opened as much as possible, and it is best to open it 24 hours a day, so as to ensure sufficient dissolved oxygen and avoid fish hypoxia. Sufficient oxygen not only helps fish breathe, but also promotes their metabolism and accelerates their growth. In addition, it can also maintain water quality, inhibit the growth and reproduction of anaerobic bacteria, and establish a good nitrification system, thus converting ammonia nitrogen in water.
1, goldfish: Goldfish is one of more common ornamental fish, it has long breed history in our country, breed is numerous and color is rich. Because of its small size, the demand for oxygen is not high, so it can be fed without oxygen, but if the feeding density is relatively high, it is better to open an oxygen pump.
2. Guppy: Guppy is a common small ornamental fish. Its body length is only about 3-5 centimeters, and its tail accounts for one third. This kind of fish does not need much oxygen, and it does not need oxygen when it is raised. Moreover, it has strong adaptability and easy reproduction, which is especially suitable for novices.
3. Lantern fish: Lantern fish is a small fish native to South America. There are many kinds of lanterns, such as traffic lights, lotus lanterns, red nose scissors, etc. They are small in size, so they don't need oxygen. Because this kind of fish has the characteristics of swimming in groups, it is suitable for raising more.
