Hi guys, I have a few question regarding betta care. I currently have three male betta fish each in separate one gallon tanks. I know these tanks are super small and not healthy for them, so I want to upgrade their tanks. Would it be possible to divide a 10 gallon tank into three parts for them? What kind of dividers do I get? Do I need a specific filter that doesn't cause too much water movement? What kind of heater is best? Thanks for any help.