I think you are right about a sick strain, OP. I got 15 neon, 10 black noeons, and 13 cardinals during this sale. The are spread over 3 fully cycled and clean quarentines. As of today I have 4 neons, 8 plack neons, and 7 cardinals left. Appears to be NTD and a very virulent strain. I've never know NTD to take out cardinals, but they demonstrate all the classic signs, and it kills them quick. 8 hours like clockwork from first sign to death. Anyone have an suggestions? Am I going to lose 38 tetras on this deal.