what is this?

[B-Rye]

picked up a zoa frag with what ever this stuff is. They LFS guy said it might be a sponge, but its hard.

 

[I never finish anythi]

I see a possible aiptasia on the left but can't make out what you mean . The picture is not very clear . Can you circle what you are talking about.

 

[twentyleagues]

picked up a zoa frag with what ever this stuff is. They LFS guy said it might be a sponge, but its hard.

I think the tubes may be hydroids. Or tube worms. Its hard to tell pic is blurry

 

[Tahoe61]

Hydroids. I wouldn't introduce the frag to my system.

 

[vetteguy53081]

picked up a zoa frag with what ever this stuff is. They LFS guy said it might be a sponge, but its hard.

I see colonial hydroids and an aptasia- both which multiply and be a nuisance. Hydroids multiply as long as they get food. You can remove rock or direct flow at them to prevent food from reaching them.

 

[B-Rye]

I found another thread with them

Are we sure these are colonial hydroids?

I found some of these in my tank- and I'm really not convinced that they're colonial hydroids. Every single ID thread I've come across has them labeled as colonial hydroids, but based on a few observations I've made, I'm not convinced. Here are some pics of the exact type I'm talking about...

www.reef2reef.com

 

[B-Rye]

I will move them off the rock work for the time being till I can assess if they have the ability to take over.

 

[B-Rye]

If they do run the risk of taking over I will try and get that zoa off and then attempt to acclimate them to my brackish tank.

 

[B-Rye]

Kinda stoked to have found some jelly fish!