Daisey Coral Being Eaten?

[humpy_the_humphead_wrasse]

hi ive just noticed that my daisey coral who's body is usually all orange has started going a greyish colour in parts. ive noticed what look like tube worms tails sticking out also. ive had the coral about 3 months now. the tails sticking out look like wire and theyre luminescent like with the light on it reflects different colours off the silver tails. after inspectopm i managed to pull a white grub out! could he be the sole problem or could the tube wormy type things be the problem? its a large piece and have noticed some holes on the surface.
what should i do?

 

[SkiFletch]

White grub looking things on corals are usually bad. Inspect further and see if youc an find more. Any other name for "Daisey Coral", never heard that one before?