I treated my aquarium with an antibiotic, but one fish still has symptoms. What should I do?

Question by Lost OC Boy: I treated my aquarium with an antibiotic, but one fish still has symptoms. What should I do? One of my tetras showed signs of popeye and septacemia, so I treated the aquarium with a 7-day aquarium antibiotic. He got somewhat better, but still has red streaks and bulging eyes. He has been more active and eating, but has not "rejoined" the other tetras and hides more often than he once did. The other fish in the aquarium have no symptoms. Best answer:

Answer by ryan c
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