Thomas labs Fish Pen Forte - Penicillin 500 mg Tablets (60 Count)
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Thomas labs Fish Pen Forte - Penicillin 500 mg Tablets (60 Count)

Aqua Lab
SKU:
AS-10015-3
$99.99 $89.99
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Description

Thomas Labs Fish Pen Forte – Penicillin 500mg 60 Tablets

Thomas Labs Fish Pen Forte – Penicillin 500mg is a high-potency antibiotic formulated to treat bacterial infections in aquarium fish. Each tablet contains 500 mg of penicillin, an effective solution for gram-positive bacterial infections. Manufactured by Thomas Labs, this fish antibiotic helps ensure the health and safety of your aquatic pets.

Related: Shop All Fish Antibiotics

Key Benefits

✅ Broad-Spectrum Antibiotic – Treats fin rot, gill disease, and columnaris in aquarium fish
✅ High Potency – Each tablet delivers 500 mg of penicillin for effective and consistent treatment
✅ Safe for Aquatic Use – Specially designed to maintain aquarium health while eliminating harmful bacteria
✅ Large Bottle Size – The 60-tablet pack is ideal for multiple treatments or large aquariums
✅ Trusted Quality – Manufactured by Thomas Labs, a leader in fish antibiotics

Need a smaller pack? Check out Fish Pen 500mg (30 Count)

Instructions for Use

Purpose: Fish Pen Forte is used to treat bacterial infections in aquarium fish, including gill disease, popeye, and septicemia.

Dosage:

  • Add 1 tablet (500 mg) per 20 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: Penicillin 500 mg per tablet

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Additional Information
Short Description:
Thomas Labs Fish Pen Forte - Penicillin 500 mg Tablets (60 Count) is a powerful antibiotic for treating bacterial infections in aquarium fish, including fin rot and septicemia.