I have family in a little town in upstate NY. I am thinking about visiting and taking 1-2 fish with me. They have bad tap water but the town has a natural spring that we have gotten water from and drank for many years. I drank it growing up. We've given it to very small children and all of our animals. I was wondering if that water would be ok to use with the bettas?
I'll say this: I do not trust the town's tap water. It doesn't taste right even when filtered. Whenever I drank water growing up, we used the water from the natural spring.