Id please, feather or hydroid?

[FelipeCarv]

Hi all,

I have all my rocks and LPS and SPS covered with those critters. They do open like feather dusters but they are soft.
My corals are not growing and I'm having some getting irritated by them.
Those are the pictures and video attached.
Thanks!

 

[Lavey29]

Looks like aptasia based on the multiple small creatures but pictures are to blurry

 

[FelipeCarv]

They are not aiptasia. They retract and come off form their tubes. But are not calcified tubes, are soft black tubes. They are like worms.

 

[BristleWormHater]

They are not aiptasia. They retract and come off form their tubes. But are not calcified tubes, are soft black tubes. They are like worms.

Definitely feather dusters. This particular kind is very prolific and reproduce rapidly. Any duster with a "parchment tube" will reproduce and grow faster than one with a calcified tube, but these little white ones get everywhere I have a few in my tank but my lfs tanks' are swarming with these. I don't mind them and I doubt they are bothering your coral. They don't bore into the skeleton and they just filter feed, which won't bother corals. You have a different underlying problem, not the dusters.

 

[FelipeCarv]

I did 2 days ago an ICP test and nothing major is going on. KH is on 8.8.
Attached my icp.

 

[BristleWormHater]

Well I know I good bit about feather dusters but not torches so I'll hand the baton off to @VintageReefer