TC Powder Packets dissolve quickly and work great against common illnesses like tail rot, cotton mouth and gill disease. Medication works in freshwater only. Remove TC quickly with carbon.
Instructions For best results, remove activated carbon or filter cartridge from filter and continue aeration. For each 10 gallons of water, empty 1 packet directly into aquarium. Repeat dose after 24 hours. Wait another 24 hours, then change 25% of aquarium water. Repeat this treatment for a second time, for a total of 4 doses. Then make a final 25% water change and add fresh activated carbon or replace filter cartridge. Treatment may be repeated, if necessary.
Ingredients Tetracycline Hydrochloride-500 mg per packet.