Possible RTN?

[stocker]

Could this be the start of RTN? For some reason my salinity shot up to 1.030, last week. Has been since brought down to 1.025. But is it too late? Should I frag or will it recover?

 

[stocker]

Here is a picture of the whole coral.

 

[ricks]

Looks like STN to me... How fast is it moving?? RTN will take out a coral in a couple of days or less. STN starts at the bottom and moves more slowly up the coral. On most it will stop at some point. And regrow later, or stay the same. I would keep a eye on it. You might have to frag the top portion if it spreads fast. Although not many with RTN ever make it as frags either.

 

[menard]

Keep an eye on Asterina stars & Jet black crabs. It so hard to spot them coz', they active at night only and feed. They cost so much damage even kill the entire colony in one night.

 

[stocker]

This has happened over the course of a couple of days. My tang had Ich, so I added some garlic supplement to the food, the ich went away, but a couple of corals started to get these symptoms. I have already fragged up my Pink monti cap. (same thing happening) Also a Red monti digi. (also fragged) That is what probably shot up my salinity.

 

[Thorium]

In my experience that appears to be STN. The perimeter of live tissue looks whiter or lighter than the rest of the good tissue. I would monitor it closely and if it gets any higher on that main stem I would frag and use super glue gel to attach it or I have also have had success with the epoxy from home depot, that stuff does not get hot. Good Luck.

 

[GMGQ]

I've experienced this too. I fragged an A. valida due to STN, and the frags never made it either. They slowly showed STN as well, and eventually the tips were still brown, but they were pretty much dead.

<a href=showthread.php?s=&postid=6996942#post6996942 target=_blank>Originally posted</a> by ricks
Looks like STN to me... How fast is it moving?? RTN will take out a coral in a couple of days or less. STN starts at the bottom and moves more slowly up the coral. On most it will stop at some point. And regrow later, or stay the same. I would keep a eye on it. You might have to frag the top portion if it spreads fast. Although not many with RTN ever make it as frags either.

 

[Milleme]

Menard, what do Asterina stars & Jet black crabs look like?

 

[paulallen]

I don't mean to scare you, but depending on how the live tissue is sheding off, it could be due to gram-negative rod-shaped bacteria that cause white-band disease. http://ourworld.compuserve.com/homepages/mccarty_and_peters/coral/wbdpage.htm

Honestly, I would monitor the rate it speads over the coral. If it is speading 1/8 to 1/4 inch a week or faster, I would spray the infected area with iodine, kent Tech I would work. About a 50/50 solution of iodine and RO/DI water. After you do that I would frag as much as you can and remove the infected area. But, that is just me. It's better to be on the safe side then let something die in your tank and have bacteria spread. Bacteria will usually not spread to a new host until the old host is dead.

 

[stocker]

the tissue isn't peeling off, it's just turning white.

 

[menard]

<a href=showthread.php?s=&postid=7000050#post7000050 target=_blank>Originally posted</a> by Milleme
Menard, what do Asterina stars & Jet black crabs look like?

Asterinas are sm. 1/4" at the most, sandy wht. in color, mimicks live rock. they would have 3 arms up to 6arms very irregular. They suck the living tissue out of your SPS. Jet blk. crabs,looks like an ordinary crab. this one will damage SPS severely, specialy shaggy acros. he prefers to eat . This crabs are hitchikers from youre live rock. I have 2 incidents w/ this crab. I tore the whole tank down just to get him out. PEACE