Yeah I agree...but had tried everything I could think of to deal with the flat worms...including just leaving them alone. But their numbers had reached epic proportions and were tormenting some of the corals...not because I think they were eating them, but because they were covering them up they were so thick.

I'm not sure if it is the worms or the FWE that killed the fish. I have heard it is the worms dying and releasing "a toxin"....rather than the FWE directly killing them.

Either way, I think I will treat again tonight or tomorrow just to be sure I got them all this time. Not as much to lose this time around anyways.