I just set up my first reef tank over Christmas so I am a rookie in this area but I have been experiencing bristleworms. The tank is a 40 breeder so a bit small and I have been removing these creatures with tweezers when I find them b/c at first I feared some kind of infestation. At first I just randomly spotted a total of about 3-4; probably harmless b/c of their small size. Last night with lights out I spotted what at first looked like the arm of a huge brittle or serpent star but turned out to be a 4 inch bristleworm. Growdy man. I had to get it out of there. The spines on its sides were enormous! If these guys are scavengers, should I leave one or two in there, IF anymore are spotted? Thanks.