[JimmyTheJeweler]

This has been in the tank for about 3 months with no probs. This am is what I found. Everything tests fine and I have made no changes lately. Any ideas? Plus I need an id on the last coral. Thanks

http://www.reeftanker.com/Coral trouble.htm

 

[scleractinian]

Do you have crabs?

Maybe a Sally Lightfoot or "mystery" Xanthid?

 

[JimmyTheJeweler]

There is 5 emerals in the tank. Do they eat ot or what are you thinking? Thanks

 

[scleractinian]

Yep, emeralds would have been my next guess... The first pic looks much like what an emerald started doing to several montis in one of my tanks. I had it for several months, no problem, but I later caught it scraping tissue off and eating it.

The spots/holes, probably not the same thing, but I dunno.

 

[JimmyTheJeweler]

Hmmm any way to keep them off?

 

[blix70]

Crab bisque?

 

[Jimbob]

Did anything else even remotely have an opportunity to happen around the tank?

It looks almost like a chemical poisoning to me... maybe somebody dusted the room that the tank is in and some very fine Pledge dust got in there, or painting/refinishing anything else in the house.

I've also seen turbinaria that get the whitish color on them like that when there is a relatively rapid change in salinity or temperature... it looks stressed.

As for the polyps, that almost looks like some kind of black cyano... hard to tell in the pic so I'm not even sure if I'm looking at the correct thing in the photo.

No other changes, maintenance (water changes, etc.) happened within 1-3 days before?

Oh, and the last pic looks like some type of encrusting pavona species. Do some digging and searching on the many varieties of pavona... they are an SPS coral and very frequently come in as hitch-hikers on live rock... they may go undetected (almost kind of dormant) for months after you get a new piece of live rock, then one day "BOOM" there it is!

 

[breezebabe]

Coral ID Montipora danae

http://whelk.aims.gov.au/coralsearch/html/201-300/Species pages/251

 

[JimmyTheJeweler]

Jimbob thanks for all your help. Nothing I can think of happened around the tank. It is in wall so no dusting by the tank. I will have to wait it out and see what happens with it. Im really bumed that was a really cool piece.

Thanks breeze for the coral ID.

 

[rmkj]

The black thing in the picture could also be a sponge.
I have a black sponge that is growing on one of my rocks that look like that.

Rick