Caviar

When I first setup my tank, the guy at the LFS suggested Crushed Coral, and now after doing some actual research and even from my own experience, ive come to the conclusion that CC is not the best for my tank. Of course, now Im stuck with the task of changing my substrate, but my question to you guys is this: How do I go about doing this without putting unnecessary stress on my fish and corals? I dont have a quarantine tank, so I'd rather not risk extracting my fish unless I absolutely need to. ...