API E.M. Erythromycin fish remedy helps broad-spectrum treatment and control of bacterial diseases, such as body slime, mouth fungus, Furunculosis (open lesions and swelling), bacterial gill disease, and hemorrhagic septicemia (blood spots without sign of skin damage). For use in both freshwater and saltwater aquariums. Can be used with any API Ich, fungus, or parasite remedy to help prevent secondary bacterial infection. This fish remedy will not color the aquarium water.
For every 10 gallons of water, empty one packet directly into the 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 the filter cartridge.