Thanks for all the inputs everyone.  I am learning as I go with this hobby.
Here's a picture of the tank and you can see the piece of rock that I have cleaned with boiling water.  It's the one at the bottom right that is in lighter green color.
DSC00011 by 
turbododge2002, on Flickr
I have another question.  Bellow is my Green Star Polyp in sleeping mood.  I have noticed a few white egg shaped white thing on it.  Is this normal part of the coral?
DSC00007 by 
turbododge2002, on Flickr
DSC00010 by 
turbododge2002, on Flickr
Thank you.....
Shane