The Exact Answer is: No, API Fin and Body Cure does not kill the beneficial bacteria in your aquarium but as it contains antibiotics it may suppress the growth of the bacteria.
API Fin and Body Cure are specifically designed to treat the common bacterial fish disease such as fin and tail rot, body slime, cloudy eyes, and gill disease.
Api Fin And Body Cure have not contained the antibiotics that can Kill Beneficial Bacteria in your aquarium’s biofilter. However, some antibiotics can kill various species of bacteria, so there is always a risk.
