API Fungus Cure PowderEffectively treats fungus (Saprolegnia spp. and Achlya spp.), mouth fungus (Cotton Mouth Disease), Body Slime and Eye cloud and Fin and Tail Rot infections. If left untreated, these can become serious health problems for your aquarium fish. Quickly controls contagious fungus and secondary bacterial infections. Helps prevent the growth of fungus on fish eggs prior to hatching. For use in freshwater aquariums. Note: This medication will cause a slight