Tetracyline and oxytetracyline dosing info here:
https://www.backyardchickens.com/t/1022878/oxytetracyline-and-tetracycline-powder-doses#post_16002461
-Kathy
Which one did you get? I ask because most sites and posts have the wrong dose. If you have Duramycin 10, the 800 mg dose is 1.5 tablespoons per gallon, it is not 1 tablespoon per gallon.
-Kathy