Green coral

[Ndirish21]

And my tank for about 8 months and notice that my crush coral is starting to turn green. The fish are fine. Just wondering what it is. I also notice little white spots on my rocks and glass. Please help

 

[Flreefer]

Crushed coral will develop many different colors on individual grains. Not sure why, but its not a problem. I siphon mine on every water change and this helps to clean it and mix it up, to help restore its white look.

 

[Flreefer]

Sorry, couldn't remember your second question!
The white specks look like small feather duster tubes, or tube worms. Also not a problem, actually a good thing to have developing.
Good luck with your tank!