Can anybody help me with this......I just bought a Emperor 400 power filter for my 55 gal. african ciclid tank. It seems to keep the water very clear. But no matter what I try I cant stop these little micro bubbles from coming back in the tank. Nobody notices them but me. But it bugs the crap out of me. I have tried everything I can think of. At this point I wish I would of paid a little more and got one of those H.O.T. filters. Everybody seems to talk good about them. Them little bubbles are driving me crazy.