yeah, my math isnt great, but im pretty sure that is about .5 gallons, if that. id feel terrible keeping anything but a lone snail in there, and thats only because the recent outbreak in my tank has me feeling very negative about snails...
i would never try it, though i will concede it looks kind of cool. which just makes it worse, because it guarantees that someone that doesnt know any better will buy it. and, by the by, what they said about bettas kind of made me hate them. if your bettas are inactive, its because your keeping them in a small bowl of their own poo. i doubt youd like to play in poo either :/
okay im done. lol