I love the colorful backgrounds...I'm perplexed by the tiny little "sandbox" of gravel though....And of course like everyone says, it's too small. I don't know if they would make a larger one, but it can never hurt to email the company and suggest it.
they have them in a gallon, and the company, if i'm not mistaking, makes bigger tanks, so why not make this in a bigger size? :d they're pretty popular tanks(sadly), so i'm sure they'd make money with larger sizes.
the sandbox in the middle, is for a plant. .____o when i got back into bettas, i saw it, and many talked about taking the plant out to give the fish more room.
I figured it was probably for a plant, but then why not just put gravel all over the bottom? I suppose in such a small tank it's easiest not to have the bottom completely covered in gravel, not to mention it would take up valuable space...but if they realized that when they were designing it you'd think they would have realized that it's too small in general!