got 4 pleuro's a couple of weeks ago, lost one within a week (came home to find it dead under some wood and seemed trapped and so think it may have suffocated), lost another a couple of days ago after it had some strange fit and died immediately. then tonight one seemed to be doing something similar and now half it's face has turned black!!
any idea what's going on and what to do?

any idea what's going on and what to do?
