STN and RTN Causes Treatments & Best Practices

[thebanker]

I notice a lot of disjointed threads about RTN and STN. What are some best practices, rescue methods, and stories from reefers who have saved a coral that started going downhill with tissue necrosis?

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I'm posting because my prized ORA pink birdsnest has started RTN'ing from a particular branch. I raised this coral from the size of my pinky to about the size of two softballs put together.

Two days ago I noticed a branch of it had bleached and RTN'd. All other SPS corals are healthy, including other birdsnest frags and colonies. I snapped off the troubled RTN branch and removed it from the tank. Hopefully this helped, but time will tell. I'm dosing Brightwell Restor, sparingly. I've halted STN on a birdsnest and once on an acropora using Brightwell Restor, but never an RTN event like this.

 

[JustinM]

I saved a piece of ORA Bottlebrush about 6 months ago, but I lost 2 nice stalks I saw a lot of the tissue was peeling back like sunburn or something. I wanted to let it go, but with advice from the wife, I snipped the 2 stalks off, and pulled out the dremel and sanded down all the areas with necrosis.

It has since fully covered the frag plug again, but is by far my slowest grower I have. It always looked happy, nice color and PE. I checked all my params and they were all within range of where I keep them.

I did just however lose a PBN today. I was getting ready to frag it, but it didn't seem worth it because a lot of it was just skeleton. I still don't know what the culprit was. My alk raised 1 dKH over 4 days, but I don't think that would do it.

 

[sneeze]

If I see it coming in from the bottom of a stalk, I cover the affected area with super glue and make sure I get it onto the edge of the good part to make sure it doesn't spread. Has worked for me in the past.

 

[thebanker]

From multiple people I've heard that covering the affected area / cut end with superglue gel will help stop RTN.

With my current case, the colony is too large to dip in Lugols or CoralRx. I've had some luck stopping TN using Seachem Reef dip on some dodgy frags.

The only "medicine" I've found that can be dosed directly to the tank is Brightwell Restor. I put medicine in quotes because Restor is more of a food, containing mostly vitamins and some aminos.

 

[AJ858]

Dont buy freshly imported corals? Just had a bad experience

 

[Mr. Right]

I’ve had success with the super glue method as well. My buddy that told me about it was introduced to this by Anthony Calflo.

 

[msp307]

I'm gonna try that

 

[anthony27]

super glue is the main thing

 

[msp307]

Super glue worked for me stopped the STN

 

[jhui]

it doesn't work for me and I still don't have any idea.