Acro tissue damage

[Yamil Montanez]

Can anyone show some light on what might be happening to this colony. It appears happened overnight.

 

[Diesel]

Need more info on your parameters and what kind of fish.
But if this is happing overnight we most likely talking about a large swing if some sort on your parameters.

 

[blebs]

looks like rtn. i would frag of a healthy branch now.

 

[Wu Tang Clam]

Looks weird to be honest,
What fish do you have? Any angels,file fish,butterfly’s ???
If not fish I’d be looking for a crab

 

[Yamil Montanez]

Need more info on your parameters and what kind of fish.
But if this is happing overnight we most likely talking about a large swing if some sort on your parameters.

My parameters are good no aggressive fish in the tank. All other corals are good.

 

[Yamil Montanez]

Looks weird to be honest,
What fish do you have? Any angels,file fish,butterfly’s ???
If not fish I’d be looking for a crab

No aggressive fish this colony have. Even in the tank for a year now.

 

[Wu Tang Clam]

It’s just that damage like that is strange,it’s in a random spot on the coral and “to me” looks like it’s being picked at.
Any Crab’s in the system??

 

[29bonsaireef]

I would say RTN as well. Best to frag as soon as you can.

 

[Wu Tang Clam]

Any fresh carbon or po4 absorbing media added recently?

 

[Yamil Montanez]

It’s just that damage like that is strange,it’s in a random spot on the coral and “to me” looks like it’s being picked at.
Any Crab’s in the system??

Hermit crabs, snails for inverts

 

[Yamil Montanez]

Any fresh carbon or po4 absorbing media added recently?

Carbon was changed during the last water change, not running gfo for two weeks now.

 

[Yamil Montanez]

I would say RTN as well. Best to frag as soon as you can.

That's my plan for today.

 

[Yamil Montanez]

I would say RTN as well. Best to frag as soon as you can.

What causes RTN?

 

[Wu Tang Clam]

Carbon was changed during the last water change, not running gfo for two weeks now.

I was just thinking you may have had your levels swing too much and kicked off the RTN

RTN is generally caused by a sharp swing in water chemistry....ie KH,PO4 ect
This stresses the coral and causes the rtn it also can sometimes be bacterial

 

[29bonsaireef]

Usually a parameter swing will start it. Could be anything really that shocks the coral. Seems to work like an infection.. a very healthy coral may be okay during the swing while a weaker one may become too weak, enough to cause RTN. In any case, it can happen rapidly. An entire colony gone in hours. So, I always frag some right away just to be safe.

 

[Yamil Montanez]

I was just thinking you may have had your levels swing too much and kicked off the RTN

RTN is generally caused by a sharp swing in water chemistry....ie KH,PO4 ect
This stresses the coral and causes the rtn it also can sometimes be bacterial

Thanks for the help. The rest of the tank seem to be happy!

 

[Wu Tang Clam]

Thanks for the help. The rest of the tank seem to be happy!

No problem....Beautiful clown tang you have there!!!!

 

[Yamil Montanez]

Thanks!! Had this little guy for a year now.

 

[Diesel]

My parameters are good no aggressive fish in the tank. All other corals are good.

Looking at your FTS I assume that they are good at the time you did your test.
And it’s just one colony right?
Do yourself a favor before you frag it up dip the colony in a bayer mix to check for pest.

 

[Yamil Montanez]

Found this little guy near the colony, what you think guilty or not.