Thomas Labs Fish Sulfamethoxazole | Broad-Spectrum Aquarium Antibiotics | Fish Sulfa 960mg

Effective Treatment for Bacterial Infections in Fish

Fish Sulfamethoxazole, is a powerful broad-spectrum antibiotic used to treat bacterial and protozoan infections in aquarium fish. It is highly effective against fin rot, gill disease, and urinary tract infections, ensuring the health and safety of your aquatic pets in both freshwater and saltwater aquariums.

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Top Fish Sulfamethoxazole Products Available

✔ Fish Sulfa Forte – 800mg Sulfamethoxazole + 160mg Trimethoprim – 30 Tablets – High-potency formula for severe bacterial infections.
✔ Fish Sulfa 960mg – 30 Tablets – Ideal for treating a variety of bacterial diseases.
✔ Fish Sulfa 960mg – 60 Tablets – Bulk option for extended treatment and large aquariums.

Why Choose Fish Sulfamethoxazole?

✔ Broad-Spectrum Treatment – Targets bacterial and protozoan infections, including fin rot, gill disease, and urinary tract infections.
✔ Safe for Aquarium Use – Designed to eliminate harmful bacteria while maintaining a balanced aquatic environment.
✔ Multiple Strength Options – Available in standard and high-potency formulas for different infection levels.
✔ Trusted Quality – Manufactured under strict quality control standards for purity and effectiveness.

Dosage Instructions

✔ Add 1 tablet (960 mg) per 20 gallons of aquarium water.
✔ Repeat every 24 hours for 5-10 days, depending on infection severity.

Usage Tips & Cautions

✔ Remove activated carbon filters during treatment for maximum effectiveness.
✔ Perform 20-25% water changes between doses to maintain water quality.
✔ Not for human use.

Related Products

• Fish Zole - Metronidazole 500mg (60 Tablets) – Effective against bacterial and protozoan infections.
• Fish Mox - Amoxicillin 500mg (100 Capsules) – A broad-spectrum fish antibiotic.
• Fish Flox - Ciprofloxacin 500mg (60 Capsules) – Targets gram-negative & gram-positive infections.
• Fish Pen - Penicillin 500mg (30 Tablets) – Treats bacterial infections in fish.
• Fish Doxycycline - 100mg (60 Capsules) – A broad-spectrum antibiotic for fish.

Fish Sulfamethoxazole-Trimethoprim – Treating Ulcers and “Columnaris” Disease

Bacterial Skin Ulcers on Fish: Bacterial ulcers start as red sores or inflamed patches on the skin that can expand into open wounds with white, ragged edges.

Aeromonas bacteria often cause such ulcers, and Flavobacterium columnare causes the related columnaris disease (a.k.a. cotton mouth or saddleback disease), which produces pale lesions on skin and gills. Fish Sulfamethoxazole-Trimethoprim (SMZ/TMP) is a combination antibiotic that is effective against a range of gram-negative bacteria on fish.

It has been used to treat ulcerative Aeromonas infections, fin rot, pop-eye, and columnaris in aquarium fish. By interfering with bacterial folic acid synthesis, SMZ/TMP halts the infection’s progression. This allows ulcerated skin to start healing and prevents small sores from turning into life-threatening systemic infections. Aquarists often note improvements in red sores and fin condition after a full course of SMZ/TMP as directed.