Aiptasia is becoming terrible during ...

[Hermie]

None can resist kalk!

they've grown back where I kalk'd them even though before that would take care of it. I think it's because a few are so large.

 

[choss]

The only thing -- aside from nudibranchs -- that worked for me was @Tamberav's method of injecting boiling water into the oral discs.

Wrasses aren't the only things that eat nudibranchs: I dumped more than ten of them in in my wrasseless IM40, and yet they all disappeared within a day or two. I suspect my quiet, secretive pygmy geometric hawkfish for those losses.

Were you ever abkle to verify whether the pygmy hawk eats nudis? I have one and am wondering the same thing