Fish Pen Forte - Penicillin - 500mg 100 Count "Long-Term Food Storage" Use only genuine Alexapure replacement

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Fish Pen Forte - Penicillin - 500mg 100 Count "Long-Term Food Storage" Use only genuine Alexapure replacementFish Pen Forte (Penicillin V Potassium) from Thomas Labs is an antibiotic that exerts a bactericidal action on gram positive and some gram negative bacteria in fish. This fish antibiotic is useful for control of some common bacterial diseases in fish, including diseases caused by bacteria such as fin and tail rot and Flexibacter infections. Directions For Use Add one tablet into aquarium for every 20 gallons of water to be treated. Repeat in 24 hours.