Seachem SulfaPlex
Broad-Spectrum Medication for Bacterial, Fungal & Protozoan Infections
Seachem SulfaPlex is a powerful, aquarium-safe treatment designed to target a wide range of common fish diseases. Ideal for both freshwater and marine setups, it contains sulfathiazole—a highly effective, yet gentle sulfa-based medication that does not harm beneficial bacteria in your aquarium.
✅ Key Benefits:
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Treats bacterial, fungal, and protozoan infections
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Safe for biological filtration—does not disrupt the nitrogen cycle
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Easily removed with activated carbon after treatment
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Suitable for use in hospital tanks or in-feed treatments
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Effective against fin rot, hemorrhagic septicemia, columnaris, and more
? Active Ingredient:
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Sulfathiazole (69%)
? Usage Directions:
In Water Treatment:
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Use 2–3 level scoops per 40 L (10 US gallons)
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Dose every 72 hours for up to 3 weeks as needed
In Food:
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Mix 1 scoop of SulfaPlex with 1 scoop of Seachem Focus and 1 tablespoon of food
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Feed once daily for up to 3 weeks or until symptoms disappear
Note: Remove invertebrates before treatment. Turn off UV filters and chemical filtration during dosing.
? Format:
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Available in powder form
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Packaged in small jars with included dosing scoop
? Ideal For:
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Fin Rot
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Columnaris
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Mouth Rot
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Hemorrhagic Septicemia
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External Fungal Infections
Seachem SulfaPlex is a reliable choice for aquarists looking to treat persistent infections safely and effectively. Suitable for use as part of a proactive quarantine or emergency treatment plan.
