I don't know, as in the get big and require 'better' lighting. If you do end up with one, you may have to consider selling as it gets close to overtaking all your space.
Stock lighting on the cube? PC or LED?
(also, I'm mostly posting because I think those questions will be asked by someone more knowledgeable.. still looking to get my first clam, so I'm just hoping to get them out of the way for you before someone smarter than me asks them )