Should I remove the nassarius snails then? I'm removing all of the anemones and the cup coral. I have three species of zooanthids, two species of mushrooms, a bird's nest acropora, pocillopora, pagoda, toad stool leather, two mystic montipora, an unknown acropora sp. (brown flesh/blue polyps), paly zoa, three orange tree sponges, green gorgonian, an unknown encrusting xenia sp., green star polyps, electric flame scallop, and an unknown brain coral sp. The brain coral does extend some feeding/sweeper tentacles at night, but I was told by someone at a LFS that it shouldn't hurt anything.