Yep, its 10x the size. Currently, the 28g cube does not have much coral, lost about 1/3 to the flame Angel, sold some others to get some money for the new tank. It has some Gsp and Xenia that are overgrowing everything else, thinking about removing most of it. The only corals that I plan on keeping long term are the 2 gold torch frags that the vile Flame Angel did not eat, as well as my single head Duncan. Those will be moved to the 280g after all stock list is complete, as well as my Tomato Clownfish, which I am hoping to pair up, she is about 5 years old, never tired paring Clownfish in the cube, but I think I might try it in this larger tank. The other fish will be sold, other than my lawnmower Blenny, which will be moved as well, to help with the ugly phase Algae. I just hope he does not fight with the tangs, I heard that they might try to take chunks out of the side of them.