FIX DOXY 100 (Doxycycline Hyclate),  is an antibiotic used to treat bacterial infections in fish. It is effective against a range of bacteria, including both gram-positive and some gram-negative bacteria. This medication is particularly useful for managing diseases such as Septicemia, Mouth Rot, and Fin and Tail Rot in fish. Add one dose, which is 100 mg, to the aquarium for every 15 gallons of water. This treatment should be repeated every 24 hours, with a partial water change between treatments. A continuous medication bath is suggested for a minimum of five days and should not exceed ten days. If no improvement is observed within five days, discontinue the treatment.  Keep this medication out of reach of children.  It is intended solely for aquarium use, specifically for ornamental fish and organisms, and not for those designated for human consumption. It should be stored at a room temperature of 59°-86°F (15°-30°C).