On the subject of aiptasia. Outside of their rapid proliferation and appearance, what harm do they do? My bta's have expanded and moved over time and the aiptasia have retreated out of the way, my soft corals xenia and kenya tree grow right in the midst of them, and my star polyps just grow right over them. They don't seem to be effecting my frogspawn or hammer. I've not yet had a coral/fish suffer from aiptasia stings and I have a bunch of them. I have used peppermint shrimp in the past which do an ok job but don't seem to live long in my system. I'm considering a separate setup with a filefish that I can put rocks in and remove when aiptasia is gone. Just curious what kind of corals do they actually bother, or is everyone else just wanting them gone because they are kind of ugly?