Here are some tanks that I like most don't come with bubblers some don't even have filters but both can be easily bought!!
3g critter keeper. I have 2 of these and they work great!
2.5 glass tank
3g marineland crest
If you can I suggest getting a 5g they aren't much bigger and are easier to find plus they are better for the betta and require less mantaince not much less though...
If you can try to find something long! bettas need more length than height. I think deep blue professional makes a 18in long 2.3g tank but it's divided into 5 sections so you'd have to remove them all so your fish would have the right amount of space! I'm sure your on a college student budget so you probably can't afford that tank...
3g critter keeper. I have 2 of these and they work great!
2.5 glass tank
3g marineland crest
If you can I suggest getting a 5g they aren't much bigger and are easier to find plus they are better for the betta and require less mantaince not much less though...
If you can try to find something long! bettas need more length than height. I think deep blue professional makes a 18in long 2.3g tank but it's divided into 5 sections so you'd have to remove them all so your fish would have the right amount of space! I'm sure your on a college student budget so you probably can't afford that tank...