So, let me get a little disclaimer out here before I say anything:
I have not done this. Have I considered it? Yes. Do I think it would be cool to have a divided tank? Yes. However, I won't if it isn't good for the fish.
So, now my question. Could I divide a 3 gallon? Obviously that would be 1.5 gallons a piece. I've heard people keeping a betta in a gallon bowl w/ a heater and they seem fine. I'd love
to have another betta, but I don't have the space to put another tank. Would dividing a 3 gallon make me a bad betta owner? Would it be unfair to Dumbledore who is living in the 3 gallon all to himself then make him only have half? I realize I'd have to do a lot more water changes but if it meant getting another fish, I'm all for it.
Like I said, I won't do it if it isn't good for the fish. I love Dumbledore and I don't want to hurt him by dividing his tank. Thanks :)