Weird wite hair parasite need help

[Ahmed Talib]

Hello everyone, I need help with this weird white hair looking thing its spreading fast and scoly and other corals don't like them slowly killing the corals please help me out with this how to remove this hair virus

Thank you
really appreciate the help

 

[Timfish]

It looks like those are calcium tubes, are they rigid and break off easily? If so they're likely some kind of feather duster worm. If they are I'd also suspect some other cause for your corals decline but you could try scraping them off and siphoning them out with steel straws.