Thomas Labs Fish Flex - Cephalexin/Keflex 250mg Capsules (100 Count)
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Thomas Labs Fish Flex - Cephalexin/Keflex 250mg Capsules (100 Count)

Aqua Lab
SKU:
AS-10003-6
$69.99 $59.99
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Description

Thomas Labs Fish Flex – Cephalexin 250mg 100 Capsules

Thomas Labs Fish Flex – Cephalexin 250mg is a trusted antibiotic designed to treat bacterial infections in aquarium fish. Each capsule contains 250 mg of cephalexin, a powerful broad-spectrum antibiotic that targets both gram-positive and gram-negative bacteria. Manufactured by Thomas Labs, this product ensures the health and safety of your aquatic pets.

Related: Shop All Fish Antibiotics

Key Benefits

✅ Effective Antibiotic – Treats bacterial infections such as fin rot, gill disease, and tail rot
✅ Moderate Potency – Each capsule delivers 250 mg of cephalexin for versatile use in different aquarium sizes
✅ Safe for Aquatic Use – Designed to protect aquatic ecosystems while eliminating harmful bacteria
✅ Large Bottle Size – A 100-capsule bottle is ideal for multiple treatments or larger aquariums
✅ Trusted Quality – Manufactured by Thomas Labs, a leader in fish antibiotics

Need a stronger dose? Check out Fish Flex Forte 500mg (100 Count)

Instructions for Use

Purpose: Fish Flex treats bacterial infections such as columnaris, ulcers, and septicemia in aquarium fish.

Dosage:

  • Add 1 capsule (250 mg) per 10 gallons of water
  • Repeat every 24 hours for 5-10 days, depending on the severity of the infection

Cautions:
⚠ Not for human use
⚠ Remove activated carbon filters during treatment for maximum effectiveness
⚠ Perform partial water changes (20-25%) between doses to maintain water quality

For additional guidance, check out our Fish Antibiotics Guide

Ingredients

Active Ingredient: Cephalexin 250 mg per capsule

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Additional Information
Short Description:
Thomas Labs Fish Flex - Cephalexin/Keflex 250 mg Capsules (100 Count) is a trusted antibiotic for treating bacterial infections in aquarium fish, including fin rot and septicemia.