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Methylene Blue
General disease preventative for both freshwater and marine aquariums. Also prevents fungal inventions on eggs and newly hatched fry. Bottle contains a small amount of concentrated dry powder and must be filled with water as directed to form the medicated liquid solution. Once the liquid solution is created, dosage recommendation is 1 teaspoon per 10 gallons. 4 oz. size bottle treats 240 gallons.
