RTN

Brandon this totally sucks! Amazing how nice and healthy. It amazes me that this stuff spreads like it does. I've never had it jump corals like that but oh my that is a lot of months of growth and happiness just poof!
 
I hated to see all these pictures of losses. :cry: If corals touch, RTN spreads. I looked at the first picture in the thread, and you could see how RTN had hit one branch of the blue tort as well.

Let's hope some of the fragged areas survive.
 
Well, the good news is that I can give you back what you gave me! :D Too bad it will take another 2 years to get back to where you were.
 
Only one piece of tort is alive today.

None of the birdsnest survied.

I did apparently stop the spread. Nothing new has been affected.

Still kind of holding my breath and watching closely.
 
Once I return from my vacation, I'll give you a call and set you up with a small colony of pink birdsnest. :sad:
 
It is in to Marc's green w/purple polyps now.

I fragged it up yesterday morning.

I expect it will get the yellow polyped piece to the right of Marc's as well.

If I can keep it out of the tricolor to the left I will be happy.
 
Brandon,
Make sure when your fragging that you cut into good tissue, 1/4" to 1/2" in if possible, this will better your chances of stopping RTN on fragged piece. Also remove any dead pieces from tank if possible, even if tissue is missing. Man, I sure hope it stops spreading for you and very soon!
Good luck!
 
Gee, I guess I should get a frag of my donated frag before nothing is left!

Can you post your current water parameters?

The one thing Eric Borneman was telling me about in January was that he has found that RTN occurs deep within the coral rather than at the tissue. (Heavily paraphrased by me, a non-marine biologist) So while we do try to frag heavily, there are times it can't be stopped because it is occuring inside the 'gastrointestinal' (my word) area. :cry:
 
@Marc wrote:
Gee said:
I know exactly what you and Eric are talking about. I have noticed a darkening of the skeleton inside of corals that are RTNing. Its just a slight color change that I have noticed. It has helped me save a few corals by fragging until I get to clean calcium or an even color, for lack of better words.
Click to expand...
 
Marc

Wait for this thing to be gone for sure. I have a couple of large pieces.

Ryan got a piece of it a few weeks back so it is not gone even if I lose all of mine. I broke it up at the first sign of tissue loss Monday morning. The remainder is gone this afternoon.
 
@BnG wrote:
Marc Wait for this thing to be gone for sure. I have a couple of large pieces. Ryan got a piece of it a few weeks back so it is not gone even if I lose all of mine. I broke it up at the first sign of tissue loss Monday morning. The remainder is gone this afternoon. said:
:sad: :sad: :sad:
Click to expand...
 
Well it has been over a week since anything new has been affected.

Nothing that wan't directly adjacent to a dying piece was affected, including a frag of the first colony the digitata that started it all.

I guess I am in the clear.

I managed to save at least a piece of everything except the birdsnest and the stylophora(or whatever, it might have been a different birdsnest variety).

2 small pieces of tort, most of the A. echinata, and 3 good size pieces of Marc's green with purple.

I am going to start remounting new pieces on the reclaimed real estate this weekend.

I did not get a chance to see if I could detect the discoloration in the skeleton of good/bad frags. It had already pretty much run its course before Marc and Robert's posts.

On how it might have started: I think Rick's observation that the digitata was somewhat shaded might be a good one.

It was partially obscured from light by the growth of nearby pieces, the only vertical stalk had been killed by the green acro behind it,and it had xenia trying to grow up around the edge from beneath it.

It seems like all those combined may have caused it to collapse. Whatever, it definitely spreads!
 
Just curious, but did you happen to notice any dead snails in the corals that RTNd? I had this happen not too long ago where a snail got stuck in a small colony and died and caused colony to die. It was actually a piece of that tan long stalk stuff you gave me when I came down there. I lost a small piece of it but the larger colony is doing well and coloring up too.
Just a thought....
 
I've had snails die in corals before, and I would later extract the empty shell from the healthy coral. Still, that is an interesting theory.
 
Marc, I have had snails do the same before. This time was the only time the dead snail ever killed a coral and the coral it killed was from Brandon's tank originally. Coincidence or something else?
 
Good article on the spreading of RTN

http://www.ericborneman.com/Biographical/My%20writings/Plymouth.pdf
 
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