Is this STN ?

[SiD]

Dear All

Got this Neon Green Bird nest last evening. Dipped in Coral Rx before placing in my tank. There is a white lesion at the base of the stem. I believe it was there when I got it from LFS, I have failed to spot it. Is this Tissue Necrosis?

I have never fragged corals before. Please advise.

Thanks in advance
Sid

 

[blasterman]

This looks like common / grandual die back that birdsnests do in the under parts of their colony. It's not RTN given there's tissue there, and when birdsnests go bad they tend to die off in random 'shotgun' chunks all over the colony. I don't see a concern unless it starts stretching up branch.

It's a very healthy and large frag. This is the way they should be sold given how fast they grow when healthy.

One thing to note is how vertically it's growing. Indicates to me it came from a lower light tank or low flow.

Given your nitrates are 40 watch out for bleaching. If it does move it to a lower light position. Do not let phosphate get lower than .03.

 

[SiD]

This looks like common / grandual die back that birdsnests do in the under parts of their colony. It's not RTN given there's tissue there, and when birdsnests go bad they tend to die off in random 'shotgun' chunks all over the colony. I don't see a concern unless it starts stretching up branch.

It's a very healthy and large frag. This is the way they should be sold given how fast they grow when healthy.

One thing to note is how vertically it's growing. Indicates to me it came from a lower light tank or low flow.

Given your nitrates are 40 watch out for bleaching. If it does move it to a lower light position. Do not let phosphate get lower than .03.

Is there anything we could do to stop the die offs. How can we call this Frag healthy when part of it is dying off?

Please excuse my ignorance, I am new to SPS, this is my first SPS.

Regards
Sid

 

[SiD]

@homer1475, Could you please provide your views on this frag.

Thanks in advance.
Sid

 

[jda]

RTN is rapid... like lose a whole colony in 24 hours. STN is slower. If the area grows, then the tissue necrosis is active. If it stays put, then that is good. Stress can happen when moving and dipping - CoralRx is a stressful dip.