Tropical Fish Keeping - Aquarium fish care and resources

Tropical Fish Keeping - Aquarium fish care and resources (http://www.tropicalfishkeeping.com/forum.php)
-   Beginner Saltwater Aquariums (http://www.tropicalfishkeeping.com/beginner-saltwater-aquariums/)
-   -   growth on live rock (http://www.tropicalfishkeeping.com/beginner-saltwater-aquariums/growth-live-rock-6095/)

ANN 05-24-2007 12:57 PM

growth on live rock
 
I have found what looks like 'lava' coming out of the live rock. There are 2 spots, shiny black, appear to be flowing (very slowly)and they seem to be getting larger. right now they are about 1/4" in diameter. I have not found any place that could tell me what this is and I don't know if I should worry about it or not. can anyone tell me???

caferacermike 05-24-2007 03:57 PM

Sounds like liver sponge. Without a pic it could be anything.

ANN 05-27-2007 09:31 PM

i found out that what we had was black algae. just cut it out and now we do not have.


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