How do you mix Terramycin? I purchased a 6.4 oz bag of the powered mix. It reads..add the following amount to 2 gallons of stock solution when proportioner is set to meter at the rate of 1 oz. per gallon. What is stock solution? Does it mean water? Then after I mix the powder to water..do I mix just one oz to another gallon of water? I don't mean to sound stupid, but I don't want to do anything to hurt my chickens? One of my Light Brahma's(that has had fluid build up on his chest) is now just standing around with his head down. Not active at all. He has had his fluid built up on him since he started getting his feather and has always acted just fine until now!! He is going on three months. I hope this medicine works. Can someone please help me and my little feather foot? I was also told to treat all my chickens. Do I dilute it different for different ages?