Is this Aiptasia or some sort of worm? ID please

[Ozzyfrank]

At first, I thought this was Aiptasia but these white things have more of a tube structure and I don't see the tentacles. The white furry things on the black powerhead may differ from the rest or maybe the juvenile stage?
I have no idea what these things are.

Any help is appreciated.
Thanks!

 

[ISpeakForTheSeas]

At first, I thought this was Aiptasia but these white things have more of a tube structure and I don't see the tentacles. The white furry things on the black powerhead may differ from the rest or maybe the juvenile stage?
I have no idea what these things are.

Any help is appreciated.
Thanks!

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The things on the back of the powerhead look different to me (they might be hydroids, but I can't tell for sure from the pic), but the rest of the things are definitely sponges - typically harmless filter feeders (they're not really a problem unless they're growing over and smothering corals).

 

[EeyoreIsMySpiritAnimal]

^^^ 100%!

 

[Ozzyfrank]

I finally got the camera to focus on the glass. Here are some better shots. The stuff on the powerhead looks connected, as shown in the photo.

And I don't have corals, so looks like I don't need to worry about it?

 

[ISpeakForTheSeas]

I finally got the camera to focus on the glass. Here are some better shots. The stuff on the powerhead looks connected, as shown in the photo.

And I don't have corals, so looks like I don't need to worry about it?

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Yeah, looks like colonial hydroids - nice pic of the branched one. You probably want to get rid of the rid of the hydroids, but I wouldn’t worry about the sponges at all (even with corals I wouldn’t be concerned much if at all).