R
rgs821
Guest
...much to change the water a week? Some tell me that it does not matter how much you change the water.Water does not have no good bacteria in it.Then others say never change more the 50 percent per week which one is true.I have tryed both i my fish seem fine either way.I was told that the good bacteria live on the gravel and the ornaments not the water.But then i hear the other way to that is the reason they say don't change over 50 percent a week.Which one is true.does good bacteria live in the water.