I thought I would bump my thread being that my tank is turning two ! I am very lucky to report that I have managed to stop a RTN bleaching from the bottom up outbreak. I first noticed some bleaching on the base of a acro about a month and a half ago . I have experienced this before and lost a few big colonies so I acted fast cutting off the dead tissue fraging and re mounting the acro .
I would have been great if it stopped with one coral but the RTN seamed to jump from coral to coral bleaching about eight sps over a period of about a month. My parameters all seamed to be in good order , the one thing I did notice was by bio-pellets were clumping a little bit so I took them off line as well as my gfo just in case and have been running carbon only for the past few weeks .
The good news is all the sps survived the RTN event some are just a little stubby now
Hear is a photo of my tank august 2013.
And here is some photos last night
