In most cases, food soaking medications only treats internal issues while dosing the water column covers external. So, I would dose GC (or Prazipro) to treat for external worms such as Flukes.I had a quick question. After treating for internal parasites via dosing the food would you also do a two week dose of general cure to the quarantine tank water for any external parasites? Or will food dosing help cover both? Many thanks!
There are some exceptions, however. Sometimes food soaking antibiotics is enough to overcome an external bacterial infection if enough of the medication builds up in the fish's system. Sometimes dosing General Cure, Metro or Prazi will treat internal parasites/worms IF the fish drinks enough of the medicated water and absorbs enough of the medication through their skin. Lots of ifs, so the success rate for this is few & far between.