I convinced my friend to get one for a species only tank and it is really damn cool. Your right though, i too would be pissed if it took out my fish/inverts. I would most likely ask an unsuspecing friend to remove it for me. <img src="graemlins//evilwhorn.gif" border="0" alt="[Evil Horn]" /> . I'm sure it would at least provide a very interesting spectical to watch.