Red sores on frog

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I figured that's what it was. I'm in the middle of a Tetracycline treatment atm.

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UPDATE:

I put the last dose of Tatracycline in the tank a day or two ago. The only thing it seemed to accomplish is making the water turn a nasty color. My frog's sores don't seem to have healed up any. So now I'm gonna try to find some bactine and a spare tank and follow Terry's advice. How long do you figure it'll take for the bactine to have a noticeable effect?