what is wrong with this coral? white arms

[raysis]

Hi!
I bought a coral yesterday, Then it has 2 arms who have been white, today its 5-6 arms who are completly white, fron the bottom to the top.

Look at the pics, i have take red around there its somthing wrong. If i look from the other side its lot of more who are total white :S

What happend with that and what can i do for it?

Thanx for answers

 

[Gills 619]

Sorry mate, your coral is going through a stage of RTN. It is caused by coral stress, change in parameters from where it has come from to your tank. Not much you can do but frag healthy pieces and hope for the best.

 

[sedor]

+1 your best bet is to frag off what is already dead and try to slowly correct whatever is stressing the coral out. Every once in a while corals will just RTN for unknown reasons, but likely your parameters are bouncing around to much or you have to much NO3 in your water column.

 

[returnofsid]

The "white" that you see is skeleton, with NO flesh. Dead parts of the coral. Cut them off.

 

[raysis]

Thanx for answers.
We have take som frags now, Must just see how it going to be to the future. The water parameters is good, What is the name of the coral? Difficulty?

Can it infect the other corals in the tank?

 

[motownmego]

i have had the same thing happen to a birdsnest. i cut the good parts off and they did fine hopefully you get the same results

 

[tibob32]

Was the water cold when you got it? How's the alkalinity in the tank?