Aquarium Pharmaceuticals Triple Sulfa is a special formula of three sulfa fish medications to effectively treat bacterial infections such as hemorrhagic septicemia (blood streaks in fins and body and localized swelling), bacterial gill disease, fin and tail rot, cotton mouth disease, body slime and eye cloud for both fresh and saltwater fish. This fish medication will not harm the biological filter and will not color aquarium water. Each package contains 10 powder packets. Each packet treats 10 gallons.