How often should channa change their water?

[Camuxs]

I have a 3-4 inch Red Barito fish in a 20 inch tank. I want to know how often I should change the water. Before, I changed the water once a week, about 20-30 percent. My fish were strong and swam happily. But I saw some information from some sources that Channa likes old water, like changing the water every 2 months. So I want to know how often we should really change the water.

 

[Midwater]

Before, I changed the water once a week, about 20-30 percent. My fish were strong and swam happily.

I think you have answered your own question.

 

[tlindsey]

I have a 3-4 inch Red Barito fish in a 20 inch tank. I want to know how often I should change the water. Before, I changed the water once a week, about 20-30 percent. My fish were strong and swam happily. But I saw some information from some sources that Channa likes old water, like changing the water every 2 months. So I want to know how often we should really change the water.

Welcome aboard

 

[Cal Amari]

The only thing old fish water is good for is growing plants