In need of some help. I am new to this hobby. Ive had my tank up and running for about 3 months now. this morning when i got up i seen part of this worm looking thing reaching out of the sand and onto a rock. it quickly disappeared. a minute later i seen it on top of the sand climbing into a rock. i'm not positive what it is. It seems to me like its a bristle worm. Well i am reading both good and bad about these worms. not positive what to do, but it does bother me. i dont like the looks for it and what i am reading there is probley more. i just dont see them. Any advice would be great. right now its a fish only tank, but i am planning on adding soft corals very soon. if i have one or two i see every so often then fine, but i dont wanna get up in the middle of the night and see my sand bed covered in these things. Thanks for the help. All my levels are good too.