About 2 week ago one of my birds became gurgely. I Seperated her for 3 days and treated her 3 times a day with Vetrex. Then I started noticing it in more of our birds. Last week I started all of my birds on Dimician 10. I have given all my birds this antibiotic for 7 days now. Today nothing has improved. Today I've noticed that 3 of our birds have white swollen shut eyes. Help I don't know what else to do. This is the first time in 4 years I have had a sickness. Should I kill them all and start over??