OK, made up these chicken watering feeders about a month ago. I thought I would give them a good trial before reviewing. I made these out of 100mm and 50mm PVC. It is a pretty basic setup, length of 100mm, end cap for 100mm, 100mm/50mm T section, small lengths of 50mm, 50mm end caps and of course the chicken nipples.
I mounted them with 100mm standout brackets and used a bit of rubber anti-slip as these hold about 10 liters each so when full of water these things weigh about 11 kgs.
The chickens are using the nipples OK, sometimes the nipples leak a little bit after a chicken has been drinking but the leak rate is very very minor. We check the water every few days and the 11 chickens drink about 1-2 litres out of each container over that period. Temps here are around 20-30 degrees ATM.