These two fish antibiotics offer treatment and control for a wide range of bacterial fish infections. E.M. Erythromycin treats and controls a broad spectrum of bacterial fish infections in freshwater and saltwater aquariums, including: fin and tail rot, open red sores, mouth fungus (cotton mouth disease), hemorrhagic septicemia, bacterial gill disease, body slime, and furunculosis (open lesions). Active ingredient: 200 mg Erythromycin per packet. T.C. Tetracycline clears both external and internal bacterial infections in freshwater aquariums, including: fin and tail rot, bacterial gill disease, hemorrhagic septicemia, open red sores, body slime and eye cloud, and mouth fungus (cotton mouth disease). Active ingredient: 500 mg Tetracycline Hydrochloride per packet. Each packet treats 10 gallons. 850 grams bulk jar treats up to 3,270 gallons.
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