I tried it on a frag, seemed to kill everything on it, but I didn't find any flatworms (I had dipped everything 3 days before). The piece had a real small rock it was on. My skimmer went nuts after I put it back in the tank. I don't think I can dip everything I got with this stuff. Just dipping that one piece made my skimmer fill up more than when I dip my whole tank with revive. If no one has used this stuff on monti eating nudis I think I can find some test subjects and see what happens.
Are you rinsing in "clean/Fresh" salt water after the dip? I personally have dipped many huge rocks in a 5 gallon bucket with this stuff and then swish them in another bucket of saltwater for several minutes prior to putting them back into the tank.
My skimmer has never shown a difference when I do the dipping.
Chris