Stuff on my rock??? ID Anyone???

[jessecnc]

This thin layer of something is growing and spreading over my rock. It is brown in color. At first I thought it was algea until it spread over a hole in the rock showing a very defined edge.
Please let me know if anyone knows what it is.

 

[bergamer]

i have the same stuff......

 

[thomas712]

Can you get a brighter pic? maybe a closeup?

 

[bergamer]

bump

 

[fishman72b]

Is It Coraline algae? Coraline will start out as a dark brownish, then turn into beautiful shades of purple, or pinkish red. This is a healthy lgae and no need for alarm, just meand tank is maturing. I dont know about the brown, but my coraline started off as brown too.. weird.. well thats all i can tell ya :happyfish :happyfish

 

[jessecnc]

Definitely not coralline. Here's a better pics w/ the 10ks on. I still have no clue what it is, but I'm starting to think its some kind of shroom?

 

[reefman22]

It kinda looks like a shroom. I got a piece of LR with a few tiny shrooms on it. Other than that, leave it to the experts. They should know.
HTH, REEF

 

[yosemite sam]

It is a type of algae but I can't remember the name. I have battled it too, there's not really anything that eats it. If left alone, it will eventually cover your rocks. I ended up taking out the rocks and scrubed them really well.

 

[bdubbya]

It looks like it is probably lobophora sp. Sometimes naso tangs will eat it, but you also have to consider how big they can get, so a tank well over 100gal is neaded.
Good luck.

 

[ca1ore]

Is it a hard crust or soft. I have fire coral (millipora) in my tank, and that is what it looked like initially.
Simon