Few of my ducklings have caught a sickness/infection and I was given the durvet duramycin powder but was not told how to administer it. The package states chickens not anything on ducks and even if it did these are ducklings. Their water is only 1/2 gal container(8 cups) which new water is given daily. My ducklings are a week old and definitely not even two pounds yet. There are 4 ducklings so I'm desperately trying to figure out how much to put in the water for 4 less than 2 lb ducklings to drink. I would probably have to administer it for course of time which is fine but I am not able to locate any information on this antibiotic for ducklings. I will need to start this antibiotic asap. Thanks!