I have the Tetroxy HCA-280 (Oxytetracycline HCI) I want to make sure I am giving my bird the right dose. I am giving 1 teaspoon per gallon and want to give him the 800mg dose. My package has 102.4 g of oxytetracyline and the bag weighs 280g. I read so many different doses and want to make sure I am not underdosing.