Horizontal Nipple Drinkers Waterers?

[Ronnie2]

What is the height from ground to install, Horizontal Nipple Drinkers Waterers on a barrel for buff Orpington roosters, hens, and 12-week old pullets?

 

[blackdog043]

Install the nipples about 1-2 inches up from the bottom of the barrel. My bucket sits about 12 inches from the ground. For the pullets, just put something down in front of one of the nipples, so they can reach it.