Kordon Prevent Ich

Contains natural herbals based on Naphthoquinones Helps prevent and treat Ich Effective against other single-celled external fish diseases Equally effective in fresh and salt water Safe for use with aquatic invertebrates Made in U.S.A The name "Prevent-Ich™," which really means "prevent single-celled diseases," is meant to emphasize that it is important that preventative treatments should be used at every step of keeping aquarium and pond fishes.  It is a lot easier and safer to prevent infections from occurring,  than in having to cope with them after they have become life threatening to the fishes.  This includes using the treatment while the fishes are being quarantined.