Originally Posted by KeithFrancis
Fireworms are not good, also have to watch out for aptasia..if there are lots of them I would try and scale them off and treat with aptasia X to rid the rock
You almost never see fireworms...only bristleworms. All bristles are good to have, in reality, as they are great members of the clean up crew in your tank. When you see someone posting a picture of a huge worm as a fireworm, it is really a bristle and they have a really big problem with overfeeding.
You have to cycle the tank anyway. Just throw the rock in with a raw shrimp to start the process.