Fish Flex (Cephalexin) 500mg – 100 Capsules | Aquarium-Safe Fish Antibiotic

Fish Flex (Cephalexin) 500mg Capsules offer powerful, broad-spectrum antibacterial protection for ornamental aquarium fish. Formulated with Cephalexin Monohydrate, a trusted fish antibiotic, Fish Flex targets both internal and external bacterial infections such as fin rot, ulcers, and gill disease. Safe for both freshwater and saltwater tanks, this fish antibiotic promotes rapid healing while helping preserve the balance of your aquatic environment.

Key Benefits of Fish Flex Cephalexin Capsules

• Broad-Spectrum Bacterial Control: Effectively treats infections caused by gram-positive and gram-negative bacteria.

• Accelerated Recovery: Supports fast healing of lesions, ulcers, and other common bacterial conditions.

• Safe for Aquariums: Designed to minimize disruption to beneficial bacteria and tank ecosystems.

• Flexible Administration: Can be dissolved directly into water or mixed into food for internal treatment.

• Trusted Formulation: Made with pharmaceutical-grade Cephalexin Monohydrate for maximum efficacy.

Explore the full Fish Flex collection for more treatment options.

Dosage & Administration

• General Use: 1 capsule per 20 gallons of water or as advised by a vet.

• Method 1 – Water Treatment: Dissolve capsule(s) directly in tank water.

• Method 2 – Food Treatment: Mix powder with fish food for internal treatment.

• Duration: Administer daily for 5–7 days.

When to Use Fish Flex Cephalexin

Use when fish show signs of:

• Open wounds or skin ulcers

• Fin or tail rot

• Labored breathing or inflamed gills

• Internal bacterial infections

• Lethargy, bloating, or loss of appetite

Product Information

• Active Ingredient: Cephalexin Monohydrate (500mg per capsule)

• Quantity: 100 capsules

• Form: Gelatin capsules (dissolvable)

Precautions & Storage

• For aquarium use only – not for human or livestock consumption.

• Avoid overdosing or combining with other medications without veterinary guidance.

• May affect sensitive invertebrates; treat in a hospital tank when needed.

• Store in a cool, dry place between 59°F and 86°F.

• Keep out of reach of children and pets.

FAQs – Fish Flex Cephalexin 500mg Capsules

Q: Can Fish Flex be used for internal infections?
A: Yes. Administer via food to help treat internal bacterial infections.

Q: Is it safe for saltwater aquariums?
A: Yes, it’s effective for both freshwater and marine systems.

Q: Does this treat fungal infections?
A: No. Fish Flex is strictly antibacterial. Use a specific antifungal like Reef Flux for fungal conditions.

Q: Can I use it with invertebrates in the tank?
A: Cephalexin may affect invertebrates like shrimp and snails. Use a separate hospital tank.

Q: How soon should I see results?
A: Improvement typically shows within 3–5 days. Discontinue and consult a vet if symptoms persist.

Q: How do I dispose of unused capsules?
A: Follow local disposal regulations. Do not flush or discard into tank water.

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