I can't even lift the 50 lb bags.I’m not that strong (sometimes I get tired even carrying the 50lb chicken feed bags, especially when it hot out) and even carrying a 3 gallon, sloshing water container is a pain.
My waterer realistically holds a little over 2 gallons so I can lift it back and forth to the spigot if needed. Or I keep empty 1 gallon jugs around for easy filling of both the chicken waterer and my dog bowls.