How to remove chlorine gas from the dragon fish tank? Dragon fish have high requirements for water quality. To cultivate a dragon fish with excellent appearance and posture, it is necessary to control the water quality and provide a guaranteed living environment for the dragon fish.

　　If the concentration of residual chlorine exceeds 0.02ppm, it will cause strong corrosion to the fish mucosa. If the residual chlorine exceeds 0.1pmm, it can pose a fatal threat to some sensitive fish. Therefore, understanding how to remove chlorine gas from the dragon fish tank is the key.

　　Common methods for removing chlorine gas:

　　1. Early water trapping and chlorine removal method

　　Before changing the water, the owner should trap the tap water in advance. The tap water can be placed in a container and exposed to trapped water for two to three days. Chlorine can be removed by drying, and the chlorine gas will evaporate from the water. But the duration of being trapped in water should not exceed three days, because if the time is too long, the microorganisms in the water will reproduce and breed harmful bacteria, affecting the water quality.

　　2. Explosion oxygen and chlorine removal method

　　If the owner's home does not have a large amount of water trapped in advance, explosive oxygen can be used to dilute the chlorine gas in the water. In fact, explosive oxygen can not only remove residual chlorine, but also dissolve oxygen, achieving the goals of removing iron, manganese, and promoting aerobic microbial degradation of organic matter.

　　3. Activated carbon chlorine removal method

　　Activated carbon can be purchased and placed in water to achieve the purpose of removing residual chlorine.

　　4. Using the "Haibo" chlorine removal method

　　In case of continuous water change, sea wave, namely Sodium thiosulfate, can be used to quickly remove residual chlorine.