How big of a waterer/feeder do I need for 4 chickens? The guy at the feed store recommended a 30 pound feeder, knowing that we might get two more chickens in the near future. How long would it take before I had to refill it again? My hubby designed & built a beautiful coop, but putting two of those giant round feeders in there is a slight issue. We thought about doing a pvc feeder, but I'm nervous it won't hold enough. I want it to be able to hold enough food for us to go camping for a few days without having to worry that the chickens are starving and thirsty. TIA!