I have just started a tank again after losing mine years ago when I was out of commission/near-deadly car accident. I had 3 saltwater tanks, but one that needed everyday care, seahorses. Heart was broken but now I decided life is incomplete without a tank. As much as I like to think I know, I have forgotten twice that. I stopped by to see if I could identify something growing in my tank, but signed up so I could answer about bristleworms: I hate them. Now I need to go post a picture in the hitchhiker/ID section, hoping you guys can tell me what it is.