Can you explain your process and dosing to do your Flatworm exit dip ??I suppose your results for Bayer dips will always vary since Bayer doesn't suggest to use its product as a dip. So there isn't a set dosage to begin with. I tend to dump enough in so I can't see the frag in the water. Never had issues at what ever strength that is, but zoa nudi are strong and ime Bayer won't get them all.
Coral rx is useless and i think everyone that's ever tried to use it to kill a pest will attest to that.
Lugols work well but you might kill the coral too.
Flatworm exit works the best for zoa nudi for me. And no harm to the coral.