It's clear that I have a CRD problem. Most are coughing and sneezing. A few remain unaffected and one has bubbles in his one eye. I ran a corse of Duramycin with no luck. Fed them yogurt ect and waited 10 days and ran a corse of Tetrox HCI admittedly dosed a bit high. Today is day 7. Some have gotten substantially better but the majority are still sick. So the question is how do I inject almost 50 birds 2x a day for 7 days with Tylosin?Is the Tylosin powder worth the $$? Any suggestions are appreciated.