well i am goign to have to say get the bristleworms out of the tank. i have seen the one in my tank eat my zoo. i saw him do it many times. then i got him out of the tank and now there is nothing eating them. but the one i had was a good size. about 1.5 in long so i am not longer for the keeping of bristleworms in tanks.
A 46 gal
bow front (Soft coral) reef tank with a 10 gal
sump. And a 30 gal
and Clam) reef tank hooked up to the sump of the 46 so they share water.