at petsmart they just starting selling two .5 gallon tanks., They come with a divider for $9.99. Is that too much for a tank that size, or is that a good deal because of the divider? My brothers thinking of getting one for his betta, and if thats a good deal, i minght just get one as well. That will also let me get another betta, as my brother hates bettas, but he loves his. I think thats kinda funny.