Buy with confidence from Plymouth Discus Voted The UK\u2019s No.1 Top Discus Retailer For Six Years By Our Customers, & Practical Fishkeeping Magazine Readers Poll. Also A Long Time Served Ebayer That Has Earned A Track Record Of Excellent Service!!\n\nVETARK FLUKE-EX 50 grams to treat 12500 litres (2750 UK gallons). \n\nThis new product specially designed for new type resistant gill and skin flukes in koi.\nNEW!! VETARK FLUKE-EX\u00AE 50g\n FLUKE-EX is a new unique product developed by Fish Treatment Ltd for use in ornamental ponds or tanks, with a number of benefits compared with existing products. It has been priced to give significant savings.\n\nEfficacy has been demonstrated by extensive clinical trials to confirm it treats skin and gill flukes including all the resistant strains of flukes, where other treatments have failed, but it can also be used to treat Trichodina, Costia, tapeworms, roundworms and crustaceans such as Argulus (fish lice). It can be .