Any ideas what these are?

I have only noticed these tonight under my moonlight and they look like midges but in water. See pic below they are the little white things which appear to dance about. Any ideas what they are?

 

Maybe a type of hydroid, but not sure as your picture isn't very clear. Can you get a better picture?

 

Not really as they are incredibly small but I will have another go.

 

Yep, very hard to tell from pic.

Not to fear unless you see spreading around tank. :-/

 

I've had a go but can't get a better picture. All I can say is that they are very very very tiny and seem to be keeping in a group under the edge of the live rock.

 

Are they translucent tentacles with white dots on the tip of each tentacle?

 

No they are individual things which are smaller than a mm. I cant work out any specific detail.

 

Hey chap! Does it look like that ?!

 

No they are individual little things. They are not linked at all they are like a group of midges.