Praziquantel ("Prazi") is the preeminent treatment for flukes. Prazipond is by far the most gentle, yet effective treatment for flukes available today. The bonus with Prazipond is that when you treat for flukes it also rids the fish of any internal parasites or worms.
PraziPond is extremely effective for the treatment of external flukes, liver flukes, internal parasites and internal worms in koi, goldfish, and tropical fish. PraziPond is a one time treatment and because it is so gentle, it does not require any water changes after treatment and you do not need to bypass your biofilter. PraziPond will work with any amount of salt in the pond and is not water temperature dependant.