Quote Originally Posted by Flatcoatluver
Goldfish require a big tank, around 50 gallons or more, I personally think bettas need 2.5 gallon or bigger and I know there are some members who would agree and disagree with me, so bettas don't cost as much and come in many different colors.
I do agree with you in some parts on that, but I think if you're going to get a filter for a Betta you should get the biggest one you can afford, but if you're not gonna get a filter for it then youre gonna wanna be able to lift it, so no larger than 5 gallons.