Fritz MetroCleanse is an exquisite and efficacious antibiotic- and anti-parasitic treatment for numerous protozoal and bacterial infections such as freshwater and saltwater Ich, Hexamita, and Oodinium, and it is also successful in tackling both external and internal parasitic and bacterial infections. This luxurious item is safe to use in medicated food mixes for systems containing invertebrates and will not compromise beneficial bacteria. Use 1 packet/20 gallons for every 48 hrs to make up to 10 treatments, or mix 1 packet per tablespoon of ordinary food (with water if dry) every day until symptoms disappear, for up to 3 weeks. Refrigerate/freeze any leftovers and ensure ample water flow and aeration. Note: Ammonia removers, such as Fritz Aquatics A.C.C.R., can be utilized during the treatment to avert fish ammonia poisoning. Fritz MetroCleanse won't discolor or cloud the aquarium. 10 pack, 200 mg