[mws]

I got some cured live rock 12lbs of it (from someone on canreef)to add to my new tank when I do the transfer. I needed some rumble for canister filter, so I got the hammer and started to chip away.
Attached is my discovery. It was a small size rock.Every peace I chipped had tons of them.
As some looked like regular bristleworms, some not so much. The giant was
3-4 inch long(in four pieces on a photo), wouldn't this one be the one who eats snails and clams?
What do I do now? There is no way I put so many of them in my tank.
On a internet I had find rinsing the rock with carbonated water(soda pop) and it will make them come out.