I am going away on vacation soon and I was looking on you tube to see how to make a 5 gal waterer. There were plenty on there but none that would keep the water from getting soiled. They all were just buckets upside down in a pan, so I went to Lowes and started my brain working to build a proper one for pigeons and this is what I came up with. It works perfectly. I got all new stuff and it cost about 10 bucks to build, but if you have buckets, less than 3 would be the cost.
The hardest think to do is make sure the lid would seal air tight. If not it won't work. I got some weather stripping and put it in the lid. Make sure to over lap the ends a half inch.
The hardest think to do is make sure the lid would seal air tight. If not it won't work. I got some weather stripping and put it in the lid. Make sure to over lap the ends a half inch.

