Fritz Maracyn TwoBacterial Infection Treatment for Freshwater & Saltwater Aquarium Fish 20 Count

Fritz Maracyn Two is a powerful board-spectrum antibiotic designed to treat bacterial antibiotic infections in both freshwater and saltwater aquariums. This trusted aquarium supply effectively combats negative bacteria, which cause infections such as fin and tail rot, popeye, septicemia, dropsy, and internal bacterial diseases. Unlike external treatments, Fritz Maracyn Two is absorbed through the fish’s skin, ensuring deep, systemic relief. It’s a great first-choice treatment when the cause of illness is uncertain and can be safely used alongside other Fritz medications like Maracyn and Coppersafe.

• Active Ingredient: Minocycline

• For aquarium use only – not for human consumption.
• Keep out of reach of children and pets.
• Remove carbon filtration due to treatment to maximize effectiveness.
• Monitor fish for signs of stress and discontinue use if necessary.
• Do not perform water changes during treatment unless ammonia/nitrite levels rise.

• Day 1: Add 2 packets per 10 gallons of water
• Day 2 – 5: Add one packet per 10 gallons each day
• Day 6: Perform a 25% water change

NOTE: If symptoms persist but improve, repeat the 5-day treatment once, If no improvement is seen, consider using Maracyn or Maracy Oxy.

For best results, use in a quarantine tank, maintain proper aeration, and complete the full treatment course even if symptoms improve early.