Help what are these?

[acanman]

They look like there white. I thought starfish but they don't look like the micro brittle stars. Any info?

 

[Jekyl]

All I can see is blue light. Have some white light pics?

 

[acanman]

One sec I'll put in on 10k lighting seems like they come out when I feed the tank

 

[acanman]

Better pics

 

[Jekyl]

@vetteguy53081

 

[acanman]

Yes someone lead me in the right direction to either A. Iradicate or b. They are beneficial(which I'm doubting)

 

[vetteguy53081]

Hard pics to view. I see tube worms, what looks like hydroids(hydra zoa) and calcium deposits. I want to be positive but pics hard to tell