API® FIN & BODY CURE fish remedy treats bacterial fish diseases that produce symptoms such as body slime, eye cloud, fin & tail rot, open red sores, gill disease, and hemorrhaging of a fish’s internal organs, skin, and muscle. Use only as recommended and in freshwater aquariums when symptoms of bacterial diseases appear. Size: 10 packets per box. For each 10 gallons of water, empty one packet directly into aquarium. Repeat dose after 24 hours. Wait another 24 hours then change 25% of the 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.