I have a huge frag of bubblegum zoas that was perfectly happy and healthy until about two weeks ago. Any ideas what's wrong? I can't find any pests except a few flatworms that don't seem to bother anything. I did a Lugol's dip a few days ago but saw no improvement. The heads are literally disintegrating and falling off. I see some suspect babies on the frag--is it possible the purple death palys are killing the zoas? Everything else in the tank is super happy. Thanks!!
