I have a 2 day old chick with a swollen/cut hock. Infection getting worse. He won't put any weight on the leg now. Need to give him some antibiotics. Bought Duramyacin-10 but don't know how much to use. Instructions say 1 bag makes: 100 gallons at 100 mg 50 gallons at 200mg 25 gallons at 400mg 12.5 gallons at 800mg I have a digital scale and don't need to mix 100 gallons. Just need to know which strength to use for it to be effective. I posted on here for info as to what to do with the leg and didn't really get any info. Hopefully someone know what to do with this stuff. I really don't want to lose this chick. The leg works. It's not splayed and I believe the tendon is in place.