The correct methods for changing the water of betta fish include the following key steps:
Water Quality Selection and Treatment
Choosing the right water quality is crucial for ensuring the health of betta fish. It is recommended to use aged tap water. That is, let the tap water sit for more than 24 hours to allow the chlorine in it to evaporate. In addition, commercially available purified water is also a good option.
Water Change Operation
When changing the water, slowly pour the new water along the wall of the fish tank to avoid directly flushing the betta fish's body. At the same time, make sure the water temperature of the new water is the same as that in the fish tank to prevent discomfort to the betta fish caused by a large temperature difference.
Water Change Frequency and Volume
It is recommended to change one - third of the water volume every day and complete a full water change every three days. This can maintain the cleanliness of the water in the fish tank and avoid stress on the betta fish caused by frequent water changes. For small fish tanks, it is advisable to change about 25% to 30% of the water every 2 - 3 days. Medium - sized fish tanks can have a water change once a week, each time changing 20% to 30% of the water. Large fish tanks should have a water change once every 1 - 2 weeks, each time changing 20% to 30% of the water.
Precautions
- Do not change all the water at once to avoid disrupting the ecological balance in the fish tank.
- Regularly check the water quality to ensure that ammonia nitrogen and nitrite are within the safe range.
- Change the water gently. Avoid using tap water directly and keep the water temperature stable.
By following these steps and precautions, you can effectively ensure that betta fish live in a healthy and clean environment.