Hi, the tube is 6mm PVC going through 6mm electrical glands. It shows the inside water level at a glance, otherwise I would have to take the lid off to check it.
I made ours from an old trailer canopy I found in a friends paddock.
1200mm x 2400mm. Has been modified a number of times but has been the same for a couple of months now lol
2 levels, sand poop boards, 3 perches. Started with 6 nest boxes, but they were to small for my heavy breeds so I...