Bottom filter fish tank to oxygen, the best way is to add oxygen pump. The filtering device of the bottom filtering fish tank is at the bottom of the water, and does not bring too much gas into the fish tank when filtering, so it is difficult to improve the dissolved oxygen of the fish tank, and an additional oxygen pump is needed for oxygen injection. However, if there are not many fish and they are not large fish with high oxygen consumption, they generally do not need special oxygen.
1. Daily oxygen: If you raise large fish, you need to give oxygen to the fish tank every day. However, the oxygen time should not be too long, do not need to open the oxygen pump all the time, open 2-4 hours a day, if it is summer or continuous rainy weather, high temperature and low pressure will lead to a decline in dissolved oxygen, so it is necessary to open for a period of time.
2. Open the tank and add oxygen: You need to open the tank for the first time to raise fish. When you open the tank, you need to test the use of the oxygen pump, and you also need to cultivate bacteria. At this time, you need to add oxygen. Because the main culture of bacteria is nitrifying bacteria, which is an aerobic bacteria, sufficient oxygen can grow and reproduce rapidly.
3. Oxygenation for illness: If the fish is ill, oxygenation is also needed. The advantage of this is to promote the metabolism of the fish. At the same time, some medicines can increase oxygen consumption, so it is necessary to supplement in this way.
