What's this?

[jwill275]

It looks to be black in color, just recently appeared over the last two weeks. If it's growing it is doing so very slowly. Thanks

http://reefcentral.com/gallery/data/500/177899Black_growth.JPG

 

[onegreenray]

sponge? cyno bacteria? is it hard or soft to the touch? can it be blown off with a turkey baster?

 

[albatz13]

can you take some better pictures of it.i assume your talkin about the dark mass by the torch....black sponge usualy only grows in low light see if you can get some clearer pictures

 

[Long Island Andy]

John, we have a gray/black sponge growing under metal halides. It seems harmless and avoids SPS . Can you post a better picture

 

[Muscle Reefer]

it looks like cyno bacteria to me

 

[jwill275]

thanks

thanks

Thanks to all, it does not blow around after a blst with a turkey baster; Let me try and get some better pics!

 

[firsttank]

looks like cyno to me..the dark black slimy stuff