As my chicks were out drinking the waterer I had made out of a pigeon waterer, I purchased a 5-gallon waterer from Atwoods. It's the one with a red tray and five sides, (I think). Anyway, thet first thing I noticed is how dirty the water is getting, even though I have it well off the floor on landscaping timbers. I am not really fond of how it's working, but I also don't want to have spent $40 for nothing. While reading about nipple watering systems on BYC, I found this post. https://www.backyardchickens.com/forum/viewtopic.php?pid=3699533#p3699533 So, here is my idea. What if I removed the bottom tray of my waterer, capped off the drain hole that allows the water to drain into the tray, and used a screw-in nipple in each side of the waterer? They would necessarily have to stick straight out, instead of at an angle, and the top of this waterer does seal off air tight. Would any of that interfere with the operation of the nipples? If this would work, would five nipples be enough for 15 hens, BA, BO, BR?