<p>AquaZole is an effective agent for parasitic control. It is well tolerated by fish with little danger of overdosing. It does not damage the filter bed. Effective against Cryptocaryon, Hexamita, Ichthyophthirius, and other external parasites. Contains metronidazole, potassium chloride, sodium chloride<p><p>DIRECTIONS: Use 1 level measure (included) to every 8 L (2 gallons). Repeat every third day for up to two weeks or until sym