Discus & Fish Protector by Discusfood prevents the risk of infection by new fish of external origin. Fish from different systems are carrier of different pathogenic germs. Mixing fish from different origins, may cause so-called x-contamination. Often the entire old fish stock falls ill. Correctly used, Discusfood Discus & Fish Protector prevents the spread of such a disease in about 95% of all cases. The valuable fish stock will be protected. Discus & Fish Protector by Discusfood is a carefully balanced mixture of high-quality anti-bacterial acting substances, which are imbedded in a natural carrier substance.Application of Discusfood Discus & Fish ProtectorDissolve the entire content of one package in a clean bucket containing 30 l of aquarium water. The new arrivals must be bathed before they come into contact with the old fish population. Discusfood Discus &Fish Protector acts as a preventive, before disease occurs. Do not use on crustaceans and other invertebrates.