I can't tell much about the Emperor from the video. There is no magic timeline for velvet, lots of variables. But, like we've been saying, if the Emp. doesn't show it now, and it is velvet, it will. The fish can be infected, especially in the gills, before the classic velvet coating appears. I would do a FW dip (read snorvich's blog) if any of these fish are in real distress, breathing problems, etc.and it looks like you're loosing him. At that point, sure nothing to lose. Again, assuming its velvet, and i'm almost sure it is. Dips can get rid of some parasites and give fish some TEMPORARY relief, but it isn't a cure.
thank you, yes you are right, so I am going to go to big als and get the sea chem cupper and give a fresh water dip and put all my fish in the QT.
I will see if they have a 100 gallon tank to put, thank you all
thx