Rid Ick

Controls Ich And Other External Protozoan, Dinoflagellate And Fungal Diseases Of Fish. For Fresh and Saltwater Home And Non-Food Fish Aquariums and Ponds. Will Not Harm Biological Filters When Used As Directed. The Foremost Ich White Spot Chemical Treatment For Aquarium and Pond Fish. Contains formaldehyde (11.52% formalin) U.S. P. grade 4.26% and premium quality aquaculture-grade zinc-free chloride salt of malachite green 0.038%.