Seachem NeoPlex™ 10g | External Antibiotic for Fin & Mouth Rot
Product details
| Management number | 235210928 | Release Date | 2026/07/02 | List Price | $22.42 | Model Number | 235210928 | ||
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Seachem NeoPlex™ 10g – Broad-Spectrum Antibiotic for External Infections
Seachem NeoPlex™ is a potent, broad-spectrum antibiotic formulated to treat a variety of external fungal and bacterial infections in both marine and freshwater fish. Its active ingredient, neomycin sulfate (43%), is highly effective against common ailments such as Fin Rot, Mouth Rot, Bacterial Lesions, and Bloat. Designed for safety and ease of use, NeoPlex™ will not discolor your aquarium water or damage the delicate filter bed when used as directed, making it a reliable choice for maintaining fish health in diverse aquatic environments.
Targeted External Healing & Intestinal Support
NeoPlex™ offers a specialized approach to treating surface-level pathogens while providing a safe avenue for internal intestinal care.
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Effective Against External Pathogens: Specifically targets bacteria that cause tissue decay, ulcers, and yellow-grey patches on the gills and mouth.
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Minimal Impact on Bio-Filter: Unlike many antibiotics, NeoPlex™ is formulated to be gentle on nitrifying bacteria, ensuring your nitrogen cycle remains intact during treatment.
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Excellent for Intestinal Bacterial Infections: Very effective against bacterial infections of the intestines (Bloat); if the infection becomes systemic, it pairs well with specialized internal treatments.
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Well-Tolerated Profile: While delicate species may be stressed, it is generally well-tolerated by a wide variety of fish species in both saltwater and freshwater.
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Versatile Application: Can be dosed directly into the water column to treat external issues or mixed with food to address internal bacterial concerns.
FAQ Section: Common Questions
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How do I dose Seachem NeoPlex™ in the water? Remove all invertebrates (as they are extremely sensitive) and turn off UV, ozone, and chemical filtration (Carbon/Purigen). Use 1 measure (included) for every 8 L (2 US gallons). Repeat this dose every 7 days for a maximum of 3 weeks or until symptoms disappear.
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How do I make a medicated food mix? Mix 1 scoop of NeoPlex™ with 1 scoop of Seachem Focus™ and 1 tablespoon of food (frozen or pellet). Add a few drops of water if using dry food. Feed this mix daily for up to 1 week to treat internal intestinal infections.
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Is it safe for plants and corals? NeoPlex™ can be stressful to plants and invertebrates if dosed directly into the water. For tanks containing these inhabitants, it is highly recommended to use the medicated food method (using Focus™ as a binder) to ensure the medication is ingested rather than dispersed into the water column.
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How do I remove the medication after treatment? NeoPlex™ can be easily removed by using a high-capacity activated carbon, such as MatrixCarbon™. It does not linger in the substrate or filter media once the carbon has been added.
Related Products
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Seachem Focus™: The essential binding agent required to safely mix NeoPlex™ into fish food for internal treatment in reef or planted tanks.
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Seachem GarlicGuard™: Use to enhance the flavor of medicated food, ensuring that sick or finicky fish consume the full therapeutic dose.
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Seachem KanaPlex™: Recommended for use if an internal infection spreads beyond the intestines to other parts of the body (systemic infection).
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Seachem StressGuard™: An excellent antiseptic to use alongside treatment to help seal wounds and prevent secondary infections.
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