From LiveAquaira DD site:
"Once they start feeding, all new fish that enter our facility, and can be successfully weaned onto prepared foods, are de-wormed, via frozen food soaked in praziquantel, metronidazole, and piperazine."
http://www.liveaquaria.com/general/g...al_pagesid=425
I usually give my fish another round of Prazi (2 treatments) as baths.