Penicillin exerts a bactericidal action on gram positive and some gram negative bacteria. Useful for the control of some common bacterial diseases of fish including fin and tail rot and flexibacter infections.
What's not to like? by racindog from Louisville, KY08/15/2014
Great stuff. Fresh & excellent quality & works good at a good price.
Worked great! by Greg from Kentwood, Michigan06/03/2014
I have had bacterial problems with most of my fish and this is by far the best anti-bacterial product I have used. And its pharmaceutical grade.
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