I have the Jellyfish tank and it's pretty cool, however, all the Jellyfish died after about a month. They were too hard to find, get caught up in the rocks a lot, and feeding was a pain. However, we still have the tank and use it to hold tropical fish now.

I would suggest that they go into the tank business and focus on unique designs, that's a scalable business with a big market. I wouldn't buy the Jellyfish again, but if they had another interesting tank, I would get that.