Hey there~ I have 4 female bettas in a 5 gallon tank. Me and my roommate were thinking about getting a filter for our fishies. I know bettas can live without one, but do you think it's a good investment? We clean the tank out once a week and feed them once a day around 2pm. We were feeding them twice a day, but we thought that was a bit too much. Back to my original question. If a filter is a good idea, what kind should we get?
Also, we were thinking about adding some more community fish into our tank, such as tetras or platys. Do you think we'll have to get a bigger tank to account for them? (tank picture in signature)