How do you guys feel about bristle worms. I bought a mushroom frag today and it came with a little bit of pulsing xenia on it. So I broke the rock and found a bristle worm. I picked it off the rock and it ripped in half. Well long story short on the piece with the pulsing xenia on it there is another bristle worm. Now I read mixed reviews on these guys, I have a arrow crab. I just want to see what you all have to say.