Lobo receding please assist

[Hdude]

It was doing great and growing nicely for over a year until the past 2 months. The receding started happening 2 months ago to the point at which you see in the photo and now it's stalled a bit. I've got no idea what could suddenly be causing this recession nor what to do about it. Could it be the adjacent paly colony?

Temp=76.5-77.5
pH=8.2-8.3
density=1.024
Ca2=1300
Ca++=380
nitrates/nitrates/ammonia=0

standard biocube lighting, no fish, mostly zoas and corallimorphs.


Any ideas greatly appreciated.

<img src=http://digitalo.com/tank/lobophylla_1.jpg></img>

 

[sahnee]

Has anything irritated it, a sting from another corals etc? Once you start seeing the skeletal stucture (the very white structure) its a very bad sign.

 

[Aqua-World PITT]

Yeah, looks like it got stung. It's going to die off halfway and you will have the bottom part left, which you can frag the dead part off. IMO

 

[Hdude]

Ok, I've decided not to move him or touch him at all for that matter. I'll just clear up the area around him.