My first set of peps worked great, my second set didn't work out. I had absolutely no luck with the file fish although it was quite adept at killing of a burgeoning outbreak of open brain, although at the time I only had one.

Now I have one or two. Kalk solution works well, but I noticed that zoas in the vicinity of the attack did not fare well. I've sqeezed out some lime juice (coronas dressed and constantly at my side) and that seemed to cause the apts to wither and die. I was able to then pinch the flaccid apt (now stretched out into the water column) and pull it out.

I thought about the bergia but I don't believe I've got enough to justify the expense.