Fish Tank Water Changing Precautions

What are the precautions when changing Fish Tank water?

Note regarding fish tank water changes: It is recommended to change water in Fish Tank once every 1-2 weeks. However, Fish farming water cannot be completely changed all at once. It is generally recommended to replace less than one third of the water each time you change it. Otherwise, the water quality will change too much, which will affect the micro-ecosystem of the fish tank, causing the fish to be unable to adapt to the new water quality and even causing them to die.