What is this .. ???

[yo69xl]

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 ??:confused:

[maymania6]

looks like a mojano to me.
that rock has a lot of aptasia/mojano anemones on it. Better start zapping them quick or they will spread rapidly.

[yo69xl]

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

[Zappo]

If it's just the one rock, I'd take it out and let it dry for a few days. No sense in risking them spreading if there's nothing else on the rock worth preserving yet.

[yo69xl]

I only see 3 of them, they are all on the same small rock .

[jdstank]

food for peppermint shrimp!

[gmate]

That's aiptasia. Take a syringe and inject boiling water or lemon juice directly into the mouth. If you touch it, it will retract fully into the rock and you won't get to it, so be careful. There are chemicals that you can inject too, try Joe's Juice or Aiptasia X.

Peppermint shrimp will eat these too, but that can be hit or miss.

Without treatment these things will take over the tank and kill coral. They're a common pest, hitchhiker on rock.

[zigzag1]

+1 aptiasia anemone. Try to eliminate them as soon as possible, as the tend to spread. They tend to sting corals and become a real nusiance. After your cycle is complete you might try some Berghia Nudibranch. Berghia are the best way to get rid of them. JMTC & GL!

And, Welcome to Reef Central!