I am trying to fight blackhead in my turkeys who run with my chickens. They are 10 weeks old. Yesterday I figured the dosage for the amount of water I was using to be 2.5mls of powder to 2 litres of water. My question is do I do it again this a.m.? How many times do I give them the mixture? The package wants me to mix the entire 900g with 320L of water. I only have 15 birds. That water will be around waaaay to long. Also I have 2 yo layers. Should we stay away from the eggs? Advice please!