How often should I change my betta fish water?


I just got a betta fish. He is in a fishbowl with some aquarium gravel at the bottom. He's only about 2 days old. I feed him pellet type food for bettas about once, maybe twice, a day. He doesn't seem to want to eat much and a lot of them sink to the bottom of the bowl. Now the water is starting to get a little cloudy and there are a lot of foamy bubbles on the top of the bowl at the corners. Is this normal? How often do I have to change the water? I also have those special tablets to make the water safe for him and neutralize the chlorine.
But what about the foam at the top? Is that normal or a sign of something bad?

Depends on the clarity and cleanliness.
Can be weekly, biweekly or even every other day.

Post to Twitter Tweet This Post