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FIX PEN 500 (Penicillin V Potassium) is an antibiotic used to eliminate bacterial infections in fish tanks and aquariums. It is useful for control of gram-positive and some gram-negative bacteria present in fish, and can treat illness such as flexbacter infections, fin rot and tail rot.
Active Ingredients (each tablet): Penicillin V Potassium….500mg
Directions: Add one 500mg tablet into aquarium for each 20 gallons of water to be treated. Repeat 24 hours later. Make a partial water change between treatments. The duration of treatment will depend on the type and severity of infection - it is recommended that extended medication baths continue for at least 5 days, but no more than 10 days. If there is no improvement after 5 days, discontinue treatment.
Storage: Keep container tightly closed and in a cool, dry place.
Warning: For aquarium use only. Not for human use. This product should not be given to fish intended for human consumption. In case of accidental overdose, contact a health professional immediately.