I have a question also. I have worked with isomalt many times, but never made the isomalt coral. Saw it on challenge the other night. They said when you do the isomalt coral it has to be at a certain temp. what would that temperature be? I have made lots of isomalt gems. Thanks 
Sugar coral
3 cups isomalt
1 cup water
Put the isomalt and the water into a stainless pot. Bring to a boil. Cook until it reaches 350° F. While it is cooking fill a shallow pan with cold water. Fill another large spaghetti pot with ice. As soon as the mixture reaches 350°, put the whole pot into the cold water to stop the cooking process. Add food coloring at this time, if desired. Pour the cooked isomalt over the ice, slowly, in a circular pattern, with an approximately 4-inch radius.
BE CAREFUL AS THE MIXTURE IS EXTREMELY HOT!
Now, fill the large pot completely with cold water. Reach in carefully and pull out the coral.
Note: the coral can be made a day ahead and allowed to dry. Or, place in front of a cool fan, on low, on paper towels to dry quickly.
Sugar coral
3 cups
1 cup water
Put the and the water into a stainless pot. Bring to a boil. Cook until it reaches 350° F. While it is cooking fill a shallow pan with cold water. Fill another large spaghetti pot with ice. As soon as the mixture reaches 350°, put the whole pot into the cold water to stop the cooking process. Add food coloring at this time, if desired. Pour the cooked over the ice, slowly, in a circular pattern, with an approximately 4-inch radius.
BE CAREFUL AS THE MIXTURE IS EXTREMELY HOT!
Now, fill the large pot completely with cold water. Reach in carefully and pull out the coral.
Note: the coral can be made a day ahead and allowed to dry. Or, place in front of a cool fan, on low, on paper towels to dry quickly.
You can also pour it over crumpled up parchment paper, sprayed with pam and it allow it to dry. Once it is dry you can break the "coral" into random sizes, 
Wow I did not know that! so the paper wont get stuck in my candy? I just know I saw the cake boss do it for a cake and my daughter wanted it done for her coral reef habitat project for school.. and all the kids were amazed! I searched all over the internet for the recipe and finally found it.. figured I had such a hard time finding it I would share!
lisamenz
Do you happen to remember what episode that challenge was? I have been looking for it for awhile now and having no luck.
Season 2 Episode 15: Aquarium Adventures & An Announcement
A local aquarium orders an underwater-themed cake for their birthday, and Buddy puts his signature on it by adding live fish! Lisa and Remy make a very special announcement to Buddy, who can't wait to tell the rest of the family.
Premiere: Feb. 1, 2010
I actually called them (Cake Boss) to see how much it would cost to do a much smaller version of the aqaurium cake...obviously they wouldn't give me a price over the phone. I would have to go to their shop...fine..no big deal...but you have to pay $100 just to meet with him for a consultation...ok fine...that $100 does not even come off of the cake price! Not happening!!! Plus...they said they don't deliver. I guess they just deliver locally or when someone is paying $1,000's for a cake.
couldnt find any free streams of it.. but did find where you could donload it from itunes! only a 1.99 but if you gotta see it ya gotta see it..
http://video.tvguide.com/Cake+Boss/Aquarium+Adventures++An+Announcement/4024471?autoplay=true&partnerid=OVG
I used isomalt coral on this cake:
http://cakecentral.com/modules.php?name=gallery&file=displayimage&pid=1604189
I acutally poured mine into styrofoam cups full of ice, but I think a pot would have worked much better. You can see mine are all really small. Be very careful of cooking too long, I burnt a lot of mine (the really dark pieces). I like the idea of putting it into a pot of cold water, it may have helped me!
Hope this helps!
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