Help need identified

Well I am starting to notice some issues in my tank. I have acquired clear nudia branch from the last green Monti I purchased from a member. What is the best predator to get them in sheck. The next is a video of some type of nuisance attacking my ORA I have a beautiful green sytlo

Here is a video of the culprit in action

Found the same thing on my other bleaching sps

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It is the small worm like thing on the lower end if the coral video won't load correct
 
I found the egg mass on the bottom of a green Monti that just recently got the bottom had eggs I scrapped them of is there any thing that will eat nudia and what can I dip with?
 
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