You don't need to remove them, they are benefical scavengers to the reef aquarium.
Below is a passage by Dr.Ron Shimek:
http://www.marinedepot.com/aquarium..._shimek_oh_those_horrible_worms_2.asp?CartId=
The fire worms most commonly found in reef aquaria are probably the best members of the so-called “clean up crew†that most aquarists can have. They eat excess food, detritus, and the remains of dead or dying individuals. While they will not attack living and healthy animals, they definitely will attack and eat an animal that is damaged and releasing blood or other tissue fluids. Because they are very adept at following scent trails and very active in their search for food, they will often find a dead or dying animal and remove all traces of it in very short order. Their fantastic ability as scavengers is likely the cause of the myth that they eat living prey. Most marine invertebrates will appear to be healthy all the time they are, for example, starving to death. If the animal finally succumbs to malnutrition, the worms will start to clean it up. If an aquarist wanders in and sees this occurring in a tank, they don’t see some diligent janitors. They see their prize specimen being consumed by some “ugly†worms! And, gasp and gadzooks, they think the worms have killed and eaten it! Well, the latter part of that conclusion is true, but the animal that is now food died of something else. As these worms don’t attack and kill animals, neither do their bristles sting corals or sea anemones, and they definitely don’t crawl up into the cavities inside a tridacnid clam, and start eating it. All of these “definite facts†are truly fine examples of aquarium mythology.
What fireworms do do, and do well, is clean up excess uneaten food and remove the recently deceased. Both of these tasks are of vital importance in reef tanks, as even a little time at reef temperatures is sufficient to turn a recently deed animal into a severely fouled aquarium. The beneficial fire worms are just about the most important animals that are available to aquarists for keeping their systems clean and functional. Perhaps, all an aquarist has to do to realize this is to contemplate the amount of “excess food†that it takes to grow a large population of the worms. Then, they can contemplate, what would happen to all that excessive nutrient if the fireworms were absent. In all likelihood, that food would have rotted and gone to foul the aquarium.
The moral of this little tale is that many hard and fast aquarium beliefs are myths. In this case, in particular, many of the “horrible†worms in reef aquaria are not only highly beneficial, but in most cases, absolutely necessary for the systems.
http://www.reefcorner.com/SpecimenSheets/bristleworm.htm
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Recently, most hobbyists have come to the conclusion that small bristle worms pose no threat to other tank inhabitants and are in fact good scavengers and add to the biodiversity of the tank. You can even buy bristleworms from some sources.
Even large bristleworms are starting to be better understood. Although it appears that some large bristleworms can be aggressive predators, these seem to be in the minority. Many large bristleworms seem to fall into the harmless scavenger category. The one in the picture above has been in one of my tanks for several years. It is about 1/3" across and at least 12" long although I have only seen about 6" of it. It lives next to a group of clams and has never shown any interest in bothering the other creatures in the tank. He is a very impressive looking specimen in his own right."
