Metronidazole is an effective and safe treatment for several protozoan and anaerobic bacterial diseases of fish (Cryptocaryon, Hexamita, Ichthyophthirus).
It does not adversely affect the filter bed when used as directed and is easily removed with carbon.
There is little danger of overdosing. Usual dose is 125 mg/40L (10 US gallons).
*Can be combined with Furan 2 & Kanaplex for parasitic, fungal, & bacterial infections; this duplicates the popular Aquatronics product “Paragon 2” that is no longer available.
*For in Tank Use; Use 1-2 level measures (included) to every 40 L (10 gallons).
Repeat every other day until symptoms disappear.
Turn off UV while using. *To prepare medicated fish food with flake, FD, or frozen fish food using Metronidazole; Use One Measure (2-5 gallon "in tank" dose) of Metronidazole per 15 minute fish food soaking for an average 60 gallon bio load aquarium (I use "just enough" water to mix fish food and Metronidazole).
After soak, pour entire contents into aquarium.