Usually, if the breeding density is not large, the effect of using oxygen to put the bottom filter is similar to that of the main tank. If there are more fish to be bred, it is necessary to put oxygen into the main tank, so as to meet the oxygen demand of the fish. In addition, it can also be divided into several gas heads, so that it can be put in the fish tank and the bottom filter can be oxygenated.
1. Floating head: When fish are hypoxic, the most common phenomenon is floating head, and this time has shown that the water body is extremely short of oxygen, if not immediately replenished, it is easy to cause the death of fish. However, if there is only one fish floating head, it can not explain the lack of oxygen, it may be a problem with its gills.
2. Anorexia: Due to the lack of oxygen in the water body, its vitality will decrease, and anorexia will also occur. This situation is mainly manifested in the feeding time, because it is regular feeding, so when the time comes, the fish will be very active, if there is no appetite, it may be hypoxia.
3, lying in the tank: and the performance of the floating head is the opposite, some new fish in the lack of oxygen, will not go to the surface, but will lie in the tank bottom. At this time, it is necessary to give the fish proper oxygen, after a period of time, basically can recover.
