What is this .. ???

Hello , Im currently on my 2nd week of cycle, and I just discovered this thing on my live rock , I dont know what it is but Im sure it came with the rock.

any idea of what it is ??

 

looks like you have some aptasia,you dont want them.

 

They look like majano anemones to me, a pest anemone.

 

What I do ?? take the rock out of the tank and clean it ?

 

Are they isolated to the one rock?
If so I would remove it and let it dry out completely a day or two and put it back in to recycle.

You do not want those pest spreading to the other rocks and it looks like you have a few small ones popping up as well.

If you bought this LR at the local fish store, I would ask for my money back or a replacement with LR that has no pest anemones on it.

 

I took the rock out of the tank, I'll let it dry for a few days before I put it back in the tank ...
also bought aptasia-x just in case

 

All I do to kill aptasia is smother them in super glue. Problem solved. I have never had a single one comes back by doing it this way.

 

I'd agree they look more like mojano's than aipstasia. Aipstasia-X should still work great on the small ones, but if they get too big you will have to hit them with it a few times. Just don't let it get out of hand!

 

I removed the rock they were on .. problem solved .

 

FWIW, mojanos have bulb-tipped tentacles...the OP has appies.

Mojano: