This thread has an excellent time lapse video of how RTN affects corals... Its a shame because it was such a nice and large colony... 
http://www.reefcentral.com/forums/showthread.php?s=&threadid=1675841
Check it out, its pretty cool and scary for that matter... :eek1:

http://www.reefcentral.com/forums/showthread.php?s=&threadid=1675841
Check it out, its pretty cool and scary for that matter... :eek1: