Kordon Methylene Blue can be used for general disease prevention and also with known issues like fungal infections, some external protozoans (Ichthyophthiriasis, Chilodonella, and Costia), and cyanide or nitrite poisoning. It is also well known for its oxygen transporting properties, allowing it to help increase survival rates of newly arrived fish with known cyanide or nitrite poisoning. One size available - 4.0 oz. (118 mL) Treats up to 240 gallons. Treats superficial fungal infections on fish and fry. Safe for freshwater and saltwater.
