I want to give my (6-7mo, 1yr, and two 13 wk old) chickens ACV. I use one plastic 1 quart waterer at a time. I bought Bragg's (raw, unfiltered, unpasteurized, with the mother) ACV. 1. How much ACV do I add to a quart of water? 2. How much to a gallon? If I mix a gallon, how long will it keep? Is refrigeration needed after mixing? 3. For how many days, and how how often should I give it to them?