What is going on with this birds nest?

meegwell · 01/14/2014, 09:18 PM

Its like the polyps are falling off...or being eaten?

(Orange Guttatus Birdsnest Coral)

It is about 6 weeks in the tank (from LiveAquaria)

This one came in the same delivery (purple polyp green birds nest) and has shown growth already:

This pink birds nest has been in the tank a year and was the same size as the two new ones:

Overall the tank has been quite stable and healthy for some time aside from some bubble algae:

You can see the same birds nest in question just a few weeks ago looking good (upper left atop the rock):

If you read my recent mouse post...that was very recent and this issue started prior to that.

params are normal and steady:

phos ~0 per hanna; ph 8.2; cal 425; mag 1300; alk 8.3 no nitrites or nitrates; 1.025 sg...temp range 79-82. equipment in sig. T5s on 10 hrs, MH the middle 8...nothing has changed.

Would anything pick at this thing? I have a rabbit, yellow tank, blue chrome, couple of cleaner shrimp, some pepps somewhere, two toned blennie, couple of clowns....wrasse.

meegwell · 01/15/2014, 10:49 AM

Bueller? Anyone...Bueller?

aujosh84 · 01/15/2014, 11:26 AM

Wake up at 1:00 am when all the lights are out and see if you can catch something picking at it. I recently found and possibly eradicated an infestation of arminid slugs this way on my clove polyps.

Mr_N1ce · 01/15/2014, 02:12 PM

Did you acclimate it to the light? Since the others are doing great water quality seems to be no issue. So it could be stressed from too much light.

jimmy n · 01/15/2014, 02:22 PM

Looks like RTN, I believe it's a goner.

JB63 · 01/15/2014, 04:31 PM

RTN - Recessive Tissue Necrosis

meegwell · 01/15/2014, 06:04 PM

It was acclimated...spent two weeks atthe bottom of the tank like all others. So too much light would do this? It is the highest coral in the tank but my rocks top out at 2/3 the height of the tank (24")... So it requires "high" light and flow...basically its 10-12" from the bulbs.

Well i'll check the after dark thing and research RTN....i guess whatever it is its not all that common.

meegwell · 01/15/2014, 06:09 PM

....and warning dont do an image search on rtn....!

droth335 · 01/15/2014, 09:27 PM

RTN = Rapid Tissue Necrosis -to differentiate from Slow Tissue Necrosis (STN) although I have no idea what timeframe determines one from the other :-) We lost a volleyball size colony of birdnest in ~24 hours so RTN can happen very quickly.

raybyrne67 · 01/15/2014, 10:09 PM

I had an Acro receding like that and cut off the dead portion and reattached it to its spot and it has fully recovered. It might be worth a try.

robotman · 01/16/2014, 02:42 AM

Quote:

Originally Posted by raybyrne67

I had an Acro receding like that and cut off the dead portion and reattached it to its spot and it has fully recovered. It might be worth a try.

yeah I did the same, one of my 2 frags was doing that and the tips were covered in coralline, I broke off the tips that had that and its doing better, my other birdsnest is growing like crazy

Spyderturbo007 · 01/16/2014, 07:20 AM

I had a Purple Stylophora that did something similar, although it would bubble before falling off. I snapped off the section that was living and glued it down somewhere else. I haven't seen any re-occurrence.

01/14/2014, 09:18 PM	#1
meegwell Registered Member Join Date: Jul 2012 Posts: 608	What is going on with this birds nest? Its like the polyps are falling off...or being eaten? (Orange Guttatus Birdsnest Coral) It is about 6 weeks in the tank (from LiveAquaria) This one came in the same delivery (purple polyp green birds nest) and has shown growth already: This pink birds nest has been in the tank a year and was the same size as the two new ones: Overall the tank has been quite stable and healthy for some time aside from some bubble algae: You can see the same birds nest in question just a few weeks ago looking good (upper left atop the rock): If you read my recent mouse post...that was very recent and this issue started prior to that. params are normal and steady: phos ~0 per hanna; ph 8.2; cal 425; mag 1300; alk 8.3 no nitrites or nitrates; 1.025 sg...temp range 79-82. equipment in sig. T5s on 10 hrs, MH the middle 8...nothing has changed. Would anything pick at this thing? I have a rabbit, yellow tank, blue chrome, couple of cleaner shrimp, some pepps somewhere, two toned blennie, couple of clowns....wrasse. __________________ 90g mixed reef \| 30g sump \| 2x250 phoenix HQI; 4x54 (ati blue plus, ati aquablue special, geissman tru actinic, geissmann purple)\| NAC 6 Skimmer \| 2x MP40wes \| eheim 1262 return\| AWI typhoon 5 rodi \|

01/15/2014, 10:49 AM	#2
meegwell Registered Member Join Date: Jul 2012 Posts: 608	Bueller? Anyone...Bueller? __________________ 90g mixed reef \| 30g sump \| 2x250 phoenix HQI; 4x54 (ati blue plus, ati aquablue special, geissman tru actinic, geissmann purple)\| NAC 6 Skimmer \| 2x MP40wes \| eheim 1262 return\| AWI typhoon 5 rodi \|

01/15/2014, 11:26 AM	#3
aujosh84 Registered Member Join Date: Sep 2004 Location: Indialantic, FL Posts: 247	Wake up at 1:00 am when all the lights are out and see if you can catch something picking at it. I recently found and possibly eradicated an infestation of arminid slugs this way on my clove polyps. __________________ wde Current Tank Info: 75g reef in the works

01/15/2014, 06:04 PM	#7
meegwell Registered Member Join Date: Jul 2012 Posts: 608	It was acclimated...spent two weeks atthe bottom of the tank like all others. So too much light would do this? It is the highest coral in the tank but my rocks top out at 2/3 the height of the tank (24")... So it requires "high" light and flow...basically its 10-12" from the bulbs. Well i'll check the after dark thing and research RTN....i guess whatever it is its not all that common. __________________ 90g mixed reef \| 30g sump \| 2x250 phoenix HQI; 4x54 (ati blue plus, ati aquablue special, geissman tru actinic, geissmann purple)\| NAC 6 Skimmer \| 2x MP40wes \| eheim 1262 return\| AWI typhoon 5 rodi \|

01/15/2014, 06:09 PM	#8
meegwell Registered Member Join Date: Jul 2012 Posts: 608	....and warning dont do an image search on rtn....! __________________ 90g mixed reef \| 30g sump \| 2x250 phoenix HQI; 4x54 (ati blue plus, ati aquablue special, geissman tru actinic, geissmann purple)\| NAC 6 Skimmer \| 2x MP40wes \| eheim 1262 return\| AWI typhoon 5 rodi \|

01/15/2014, 02:12 PM	#4
Mr_N1ce Registered Member Join Date: Apr 2011 Posts: 187	Did you acclimate it to the light? Since the others are doing great water quality seems to be no issue. So it could be stressed from too much light.

01/15/2014, 02:22 PM	#5
jimmy n Registered Member Join Date: Mar 2000 Location: Reno, NV Posts: 1,256	Looks like RTN, I believe it's a goner.

01/15/2014, 04:31 PM	#6
JB63 Registered Member Join Date: Apr 2007 Location: Chicago, USA Posts: 401	RTN - Recessive Tissue Necrosis

01/15/2014, 09:27 PM	#9
droth335 Registered Member Join Date: May 2003 Location: Iowa Posts: 794	RTN = Rapid Tissue Necrosis -to differentiate from Slow Tissue Necrosis (STN) although I have no idea what timeframe determines one from the other :-) We lost a volleyball size colony of birdnest in ~24 hours so RTN can happen very quickly. __________________ Dave Current Tank Info: 210 sps dominant reef: 40g sump, kalk,4 reefbreeder photon 32's ; 300DD mixed reef with 180 gallon sump, 4 Reefbreeder Photon 32's.

01/15/2014, 10:09 PM	#10
raybyrne67 Registered Member Join Date: Apr 2013 Location: Albuquerque Posts: 353	I had an Acro receding like that and cut off the dead portion and reattached it to its spot and it has fully recovered. It might be worth a try. __________________ Ray, Current Tank Info: 75G, Salinity 1.025, Temp 80.5, Ca 430, Alk 9, Mg 1260, mixed reef, Radion XR30w Gen 2 x2, MP10w ES x2,Vertex 130, Eheim 1260 return, Apex, Tunze ATO

01/16/2014, 07:20 AM	#12
Spyderturbo007 Registered Member Join Date: Jun 2012 Location: PA Posts: 2,564	I had a Purple Stylophora that did something similar, although it would bubble before falling off. I snapped off the section that was living and glued it down somewhere else. I haven't seen any re-occurrence.