Biorbs: Cool, OK, or Stupid!!

[nirvanarama]

they do have an air stone

 

[Crookster]

I'll check when I get home. As I said b4, none of my fish have any ill effects from living in there and the water never gets cloudy.

As I said earlier have any of you people slagging them off ever owned one? Or at least read anything about how they work. If so then fair enough, but if not then you don't know what your talking about.