Completely safe and effective treatment in fresh and salt water on a wide range of protozoan, crustacean, and other invertebrate parasites of fishes. It is effective on troublesome "white spot" (ichthyohthirius) of fresh water fishes. Rich-Ich + destroys ich as well as other common protozoan parasites, including chilodonella and costia. When used as directed, Rid-Ich + is safe for most fresh and salt water fishes including catfishes, loaches, and tetras. Rich-Ich + is safe for use in recirculation systems utilizing biological filtration. One teaspoon treats ten gallons.