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Exp.date : about 2 years from now. 

Description : 

Doxycycline is the most popular non-prescription Fish Antibiotic. It is a Pharmaceutical Grade Fish Antibiotic. It is effective against a number of pathogentic bacteria associated with marine and freshwater ornamental fish diseases. It can use for infected eyes, pop-eye, fin or tail rot, skin ulcerations, columnaris disease, and gill disease.

Dosage & Administration: Add contents of five capsule(or tablets) (equal 500 mg) into aquarium for each 20 gallons of water to be treated. Repeat in 24 hours. It is suggested that a partial water change be made between treatments.  While treatment duration depends on type and severity of the infection, it is recommended that extended medication baths continue for a minimum of 5 days and not more than 10 days. Discontinue treatment with this medication if no improvement is noted within 5 days. To remove harmless yellow color, change 20% of water and use charcoal filter until clear.

Caution: Keep out of reach of children. Fish Antibiotics are for aquarium use only. Intended for ornamental fish and/or ornamental organisms, and not intended for use with fish that are intended for human consumption. For those allergic to Amoxicillin, separate capsule by holding each end above tank and tap out contents.

Ingredients: 100 mg Doxycycline 

Storage:  Store at controlled room temperature of 59°-86°F. (15°-30°C).