I've only briefly talked about this on the tropicalfishkeeping forum and they dont think its a good idea.
I'm interested in the PetCo Bookshelf tank because its perfect for the last available space I have for tanks. It's 24" long and a little short, about 6.6 gallons. I almost considered getting this and dividing it up for 3 bettas, but I've decided that's not enough water for them. Would dividing this for 2 bettas be reasonable or is everyone here also settled that every betta should have 5 gallons minimum?