Kordon Rid-Fungus™ is an easy to use treatment composed of 100% multiple organic ingredients for all types of external and epidermal single-celled infections. It's broad spectrum of activity and lack of toxicity makes Rid-Fungus effective without requiring a specific diagnosis. Helps prevent and treat single-celled external fish diseases caused by fungus, as well as by White Spot Disease (Ich), other Protozoans, and Dinoflagellates. It is equally effective in fresh and salt water, and does not require water changes in between treatments. Safe for use with aquatic invertebrates (snails, shrimp, crabs, coral, anemones, etc.). Made in the U.S.A.