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Gram Negative / Gram Positive
|Ecological Laboratories Gram Negative / Gram Positive is to be used for mouth "fungus", fin & tail rot, furunculosis, bacterial gill disease, and "black molly" disease. Gram Negative / Gram Positive is not recommended for use with invertebrates. 3.4 oz. treats up to 100 gallons. Gram Negative / Gram Positive is designed to control, prevent and treat microbial diseases in aquarium fish.|