Fish Pen Forte - Penicillin - 500mg 100 Count

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What is Fish Pen Forte?

Fish 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.

Special Precautions

For aquarium and ornamental fish only. Not for human use. Keep out of the reach of children. Keep container tightly closed and in a cool dry place. Not to be given to fish intended for food use.

Directions For Use

Add one tablet into aquarium for every 20 gallons of water to be treated. Repeat in 24 hours. It is suggested that a partial water change is made between treatments. While the duration of treatment depends on type and severity of infection, it is recommended that extended medication baths continue for a minimum of 5 days and not for more than 10 days. Discontinue treatment if no improvement is noted within 5 days. 

FDA inspected. 

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5.0 Based on 2 Reviews
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Paul M.
United States United States
Peace of mind on the double

There's very little substitute for having the right tools at the right time and not have to worry about other interfering factors. Has saved vacations and work trips many times.

Marion K.
United States United States
Good Things

As usual, all meds are good. Only problem was what you call the surgical set. “ not for medical use “. Definitely not worth the cost. Didn’t match up to the quality of all your other products.