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. Although it can be used in saltwater, Metronidazole™ would be the more suitable product. For use in freshwater or marine aquaria.