If you own a drill you can definitely do this. I don't remember what size bit, however it said on the You Tube video we watched. You can use a designated water bucket or just a five gallon bucket from a hardware store. Message me if you like I can find out the size bit. It's a very easy project and you can use most equine deicers in any bucket for winter. They are usually thermostat controlled and you can just run an electric cord to your coop. Maybe I missed it or maybe it's not a good idea, but have you tried treating everyone with an antibiotic like duramycin? Also make sure your ACV is "with the mother", or it isn't really effective. I think it's good to do the ACV in water on a regular basis. We alternate, plain water and then water with ACV, 2 tablespoons/ gallon. Good luck! It's so stressful when they are sick and you don't know why.