Black Coraline?

[sirclintler]

Is there such a thing, or something else? I was going to post a pic but decided not to because it looks exactly like coraline except its black, It is incrusting and I can not scrape it off and it bleaches just like the red coraline.

 

[cloak]

I'm not sure if there is such a thing as black coralline algae, but sponges do come in black. Lobophora algae can take on a black appearance too sometimes.

Definitely post that picture if you can.

 

[sirclintler]

for what it's worth without a pic, It is flat like coralline as in no tissue like with algae.

 

[cloak]

Here's a picture of some Lobophora just for comparison.

https://images.search.yahoo.com/ima...Mx&fr=ymyy-t-999&hsimp=yhs-att_001&hspart=att

 

[sirclintler]

Bummer, please tell me its as easy as removing the rock, I have read about tangs and such but I want it out now

 

[sirclintler]

The rock itself was colored black.

 

[evan47]

I had stuff like this in my new tank not that long after the cycle completed.
It did not last too long and I managed to blow it off with a turkey baster quite easily.
How long has your tank been running?