Rapid Tissue Necrosis (RTN)

When RTN (Rapid Tissue Necrosis) hits a coral, there is little time to act. I've been growing a tiny frag of "bird's nest" for about six months or longer, and as of yesterday it looked like it was really taking off. I have a Frogsspawn coral nearby, and it has brushed against this coral on occasion, but never enough to make me worry.

Today I looked in the tank, and this is what I saw. There is so little left that acting now is pointless. There isn't even a twig to snip that still has enough healthy tissue. :(