Revive doesn't kill nudi's, nor does coral rx, lugol's, and some other hokey pokey dip I bought I can't remember the name of. I didn't find anything that killed them, and didn't kill the coral. If it's a frag, any dip should work for the nudis, as long as you get them all off and there's no eggs. Tricky part is when the coral is encrusted on a rock or plug and you can't get to the underside. Nudi's will hide in any crack or crevice and lay mass quantities of eggs. I spent many months, dipping, inspecting, removing nudis with pipette until I finally got tired enough and fragged all the monti down to manageable size pieces. Tossed most of it out. That was the same time I was dipping all the acropora for AEFW. The only pieces I lost using revive were ones that were too far gone from the infestation. So as far as which is hasher, I don't know. I dipped acro in revive in a qt tank that were loaded with redbugs from a buddies system. I could not get rid of them until I treated with milbemycin oxime.
I used to read in the forums qt, qt , qt, blah blah blah, I was smarter than that. Just dip everything that goes in the tank. That didn't work out too good, after having almost every pest known to man. Figure lesson learned right? Not, I still slack on qt and feel someday it will come back to haunt me