Aptasia?

[sayitfast]

I just noticed these growing on the side of a rock that has a colony of Zoas on it. They close up inside little tubes quickly when touched. Reminds me of a fan a little.

Any ideas?

 

[cloak]

Colonial Hydroids.

These aren't as bad as Aiptasia, but they can irritate corals if left unchecked.

 

[sayitfast]

Colonial Hydroids.

These aren't as bad as Aiptasia, but they can irritate corals if left unchecked.

That's a bummer.... I think I will remove this rock. hope they don't appear anywhere else. This is only place I see them... its a small frag tank.

Will they grow all over or is there an easy way to control them.

 

[cloak]

You could try smothering the colony with some epoxy. It would basically be like putting chewed bubble gum over them. Once this hardens you can build on top of it.