I got another betta....I'm addicted!! He's currently living in a one gallon that I had laying around... My other betta has a 2.5 gallon Aqueon mini bow, but I have been reading a lot on the forums about how you don't really need a filter if it's only 2.5 gallons.
So my question is...do I get another Aqueon mini bow? Or if a filter isn't *really* necessary, do I just get a critter keeper that is inexpensive?
I have a heater and a thermometer, so that's not an issue. I just want my new little guy to be happy. My other betta LOVES his 2.5 gallon, and doesn't have a problem with the filter (it really doesn't move the water around enough to disturb him).