Does anyone know of a small filter, 2-5 gallons or so? I have a little one by Whisper brand, but frankly, it sucks. It worked well for a few months, and now its done for. I like to keep my 2 gallon baby betta tank filtered. Know of anything else??

I got an aquaclear 150 in my 5gal tank... its oversized for the tank but you can regulate the flow. I would recomend the aquaclear mini for your beta tank.