Hi, I have two bettas right now. Once one of them gets better from fin rot (he is from Walmart

) They will be in a divided 10 gallon tank.
I'm thinking of getting another in the next month or so. I don't have the money to buy a new tank, so I might just buy a large vase to keep him in until I can find a cheap/free tank. They are on Craigslist very often! So it probably wouldn't be long. I would do water changes very often. Because I have one getting better from fin rot, I'm used to doing really often changes.
So, would it work to keep him in a Large vase for a little while? A month tops.
Thanks!!!