Can 3 bettas live in a divided 10 gallon tank without a filter?

I have a ten gallon fish tank and want to put three bettas in it. I will be putting dividers so no mean comments. They will have a heater but my filter puts off way too much of a current for a betta. I always do a 10 - 15 percent water change once a week for my fish so I will do this for them. Oh and they will also have a airpump as well. I know they are surface breathers and have labrynth lungs or whatever so I am just wondering in they can live without a filter, I have had bettas in a bowl before and the lived 5 years, so I would think that a ten gallon plus airpump plus heater would be good but I just wanted to check. I love bettas I think that they are beautiful. Also will they be active? I want them to swim and not sit on the floor all the time or in a cave or on a plant.