Orange glow

[Dombake]

Hi I've just added a few more blue LED's (low level for evenings) and noticed this funny orange glow coming from one of my love rocks. The Rock has a pretty good covering of coralline on it and the glow is coming from the cracks. Can anyone tell me what it is and should I be happy or concerned?

Thanks in advance.

 

[Mrs. Music]

something is flourescing.

 

[Dombake]

Any ideas what it could be? It's not something that appears to be moving.

 

[BrianKC]

Sponge?

 

[Dombake]

http://www.reefcentral.com/forums/showthread.php?t=1938874

Just found this so think I have the answer. Cheers.

 

[heathlindner25]

I've seen certain algae turn bright orange when they die. .. usually see it after we clean a sponge or something and then put it back in the tank