Seachem MetroPlex Parasitic and Bacterial Treatment
Seachem MetroPlex is a reliable and secure solution for treating various protozoan and anaerobic bacterial infections in fish, such as Cryptocaryon, Hexamita, and Ichthyophthirius. It is safe for the aquarium’s filter system and can be easily cleared using carbon. The risk of overdosing is minimal. The standard dosage is 125 mg per 10 gallons of water. This product contains metronidazole as the active ingredient.
Key Features
- Effective against protozoan and anaerobic bacterial infections
- Safe for use in aquarium filter systems
- Can be removed using activated carbon
- Low risk of overdosing
- Standard dosage: 125 mg per 10 gallons of water
| Active Ingredient | Metronidazole |
|---|---|
| Target Infections | Cryptocaryon, Hexamita, Ichthyophthirius |
| Usage Safety | Safe for filter systems; can be cleared with carbon |
FAQ
Can MetroPlex be used in a freshwater aquarium?
Yes, Seachem MetroPlex is designed for use in freshwater aquariums and is effective against common parasitic and bacterial infections in fish.
How long does it take to see results after using MetroPlex?
Results may vary depending on the infection, but improvements in fish health are typically observed within a few days of treatment.
Is it safe to use with other medications?
Please contact customer service for guidance on combining MetroPlex with other treatments.

Leonard Ellison –
Used MetroPlex to treat a Hexamita infection in my betta. The fish showed improvement within 48 hours. It didn’t affect the filter or water chemistry. Easy to dose and safe for the tank environment.
Caroline Davidson –
Treated a mild Ich outbreak with MetroPlex. The fish recovered quickly and the treatment didn’t interfere with the filter. I used carbon after treatment to remove any residue.
Stewart Fisher –
Great product for bacterial issues. My shrimp and fish both responded well. No side effects observed. The instructions are clear and dosage is easy to follow.