[oldschooldino]

I have a copper banded butterfly in my 125. He destroyed all the aptasia and does also eat some frozen food. I believe he also eats copepods, amphipods, etc... I have not seen him nip at any of my corals(zoos,leathers,lps,stonies) but maybe I just got lucky. Maybe you got a good one, maybe not. If he will eat prepared foods, then by keeping him well fed after the aptasia are gone, there is probably less of a chance of him going after your corals. Unfortunately, the only way to know is to put him in and see. I do agree though, that he should go in the main tank, as the refugium is too small.