Seachem MetroPlex 2.2 lbs
Metronidazole is an effective and safe treatment for several protozoan and anaerobic bacterial diseases of fish (Cryptocaryon, Hexamita, Ichthyophthirius). It does not adversely affect the filter bed and is easily removed with carbon. There is little danger of overdosing. The usual dose is 125 mg/10 gallons.