Penicillin VK (Fish Pen) Aquatic Antibiotics 500MG – 100 Capsules

$106.95

Each tablet contains… Penicillin VK potassium 500mg. USP. Penicillin VK is a broad spectrum antibiotic. For treatment against many gram-positive and gram-negative microorganisms

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Dosage…Use one tablet [ 500mg. ] per 20 gallons water

  • Dissolve in small amount of water, add directly into aquarium, pond or hospital tank
  • Repeat every 24 hours for 5-10 days, do not exceed 10 days
  • It’s recommended that 1/4 water change be made daily during treatment