Help ID Please

[mkfmedic]

I purchased some great live rock from a member of this site and have had it waiting in two trashcans continuing to cure until the arrival of my tank next week. Power heads, no heaters in the cans. No problems whatsoever with the rock. No signs of pests or algae, water is clear with no odor. No ammonia or nitrites with low nitrates. However, a couple of the pieces have this red, hard calcifying substance? A type of coraline algae? There is no direct lighting on the rock.

Any thoughts and thank you very much!

Mike




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[Surgical]

Looks more like a sponge to me

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[mkfmedic]

It is very hard, with sharp edges. I can actually break pieces of it off. Not sure if that helps at all, but I'm not convinced that it is a sponge?

Does anyone think that it is something to be worried about?

Thanks again,

Mike

 

[ReefRiley]

I have it too. Its sure not a sponge. It reminds me of like coraline algae that grows like an acro

 

[jessesoto33]

Guts!!!

 

[Reef Bullet]

I used to have that on some of my rocks. I believe it's a branching type of coralline

 

[mkfmedic]

Thanks Guys, I would agree that it seems to be some sort of branching coralline. Unless someone tells me otherwise, I won't worry about it!

Thanks so much.

 

[Reefcube29]

Hydrolithon breviclavium

H. breviclaviurm can occur as a calcareous crust but more commonly occurs as a pinkish to dull reddish nodule usually smaller than a fist in size. The nodules are smooth surfaced and exhibit an extensive development of small, blunt branches. H. breviclavium occurs on reef flats and in deeper water.

 

[fishy_mcfish]

yea I have had some grow on my rocks out of nowhere..always wondered what it was myself..now I know