I was wondering where I could get a filter for a 2.5 gallon.I'll have to go check that out the next time im at a store. Also, as far as I understand, Bettas are puddle fish, and live in some areas where the water is only an inch or two deep?
You can make your own filter if you have an airpump and small plastic container(old fishfood tub works great). Pm me if you'd like instructions. Very easy to make and they work great! Excellent for bettas as they produce very little current.
cheers
Thanks for the offer, but i think i'll stick with buying the 3 gallon with the carbon filter.