Oasis Poultry Waterer, On-demand Water for up to 15 Chickens, Turkeys or Ducks Complete system, nothing more to buy. Simple gravity flow, no more cleaning out fouled drinking dishes. The 4 nipple fountainhead provides on-demand water for a flock of up to 15 poultry The 5 gallon bucket reservior may be filled from ouside the coop! (Imagine, no more stepping in you-know-what first thing in the morning) Shut off valve and 4' hose for easy installation. You may also use ordinary garden hose for longer runs Great for vacations, a full bukcet will last several days