NT Labs Koi Care Flukasol Suspension is an easy to use, ready mixed liquid formula Flubendazole. Anti-Fluke treatment ideal for use when treating Skin and Gill Flukes. Use Koi Care Flukasol Suspension when fish show signs of fluke infestation, preferably after confirmation by microscopy. 500ml Treats 18,200 litres (4,000 Gallons)