Does anyone know what these are?

[Barney 7778]

Hey guys, I have been working away during the week and leave the wife and youngest to look after the tank but I have noticed a small Zoa colony that has been taken over by what I think may be hydroids? Can anyone confirm and if so should I remove from the tank or are they harmless? I e attached some lights off photos as they seem to look clearer

 

[DED65]

Hard to tell from the picture! I want to say feather dusters, but I am leaning towards Aiptasia. Hopefully someone else will chime in.

 

[Barney 7778]

My worry was Aptasia as I had a small outbreak a couple of weeks ago however it never looked like these.

 

[LeleganceCoral]

They are just some little tube worms, i have tons, they dont sting they only filter water. You should remove them if possible if they are on coral, since they might irritate it. Otherwise harmless. I would recommend just pull them off carefully with any tweezers you have its pretty easy

 

[vetteguy53081]

Hey guys, I have been working away during the week and leave the wife and youngest to look after the tank but I have noticed a small Zoa colony that has been taken over by what I think may be hydroids? Can anyone confirm and if so should I remove from the tank or are they harmless? I e attached some lights off photos as they seem to look clearer

Looks like a cluster of tube worms which use their fans to capture food. Some refer to these as cluster dusters

 

[Barney 7778]

They are just some little tube worms, i have tons, they dont sting they only filter water. You should remove them if possible if they are on coral, since they might irritate it. Otherwise harmless. I would recommend just pull them off carefully with any tweezers you have its pretty easy

Ok thanks, you learn something new every day!