I remember 15 years ago it wasn't considered such a big deal. Myself? I thought (and think) they are uglier than sin. I just don't think they give anything back to the ecosystem they share. The comments on sterile tanks are spot on. That's an annoying new goal. And I, also, had a few Peppermint Shrimp in my old 90. What aiptasia I had was food. And I had a good balance going there.