KOI PRAZI LIQUID, also known as “the Fluke Destroyer,” offers the same effectiveness as KOI PRAZI with the added convenience of a ready-to-use liquid concentrate. KOI PRAZI LIQUID praziquantel concentrate is the safest and most effective treatment against salt-resistant flukes. Use of KOI PRAZI LIQUID will not stress your fish or set back your bio filter. The higher concentration level of KOI PRAZI LIQUID also delivers superior value than competitor liquid praziquantel treatments. KOI PRAZI LIQUID effectively eliminates flukes common to koi, goldfish, freshwater, and marine fish. We suggest treatments with KOI PRAZI LIQUID every spring to help get your pond fish off to a great season, and again in the fall just before winter arrives. Treating all new koi fish with KOI PRAZI LIQUID is also highly recommended to help keep opportunistic flukes in check.