Yeah, this is probably an STN since the colony has been tanked in my supplier’s tank for 3 days already and that’s all there was to the damage. With RTN, the whole colony would probably be gone by now. However, you could be right though, Ian. Now that the compromised piece is in a totally different environment, it might have went from STN to RTN overnight. We’ll see later when I go in the shop to check.It matters in regards to what chances it has when fragged. Also matters on how aggressive you should be in fragging. How far you want to be from the dead tissue. In fact with stn it's only an esthetic concern, fragging not needed for survival.