Well, I rushed home from work today, Furan 2 in hand to start treating
the tank and my poor cory was foud dead at the bottom of the tank. The
other two cories look ok, except for one is missing the bottom of his
tailfin. I think the infection is Furunculosis from the pictures I've
seen on the internet in my research. Can anyone confirm that I might
be correct and whether I should dose the tank anyway to try and prevent
further infection.

Thanks,
Chris