what are your thoughts? I have not tried the cups, but have not had the best luck with nipples (for watering). I put three nipples in the bottom of a five gallon bucket and the worked for a few weeks but they got plugged up, I took them apart cleaned and put them back out, plugged up again after a week or so. Is this normal, maybe I need to keep my water source cleaner? I think it was just dirt maybe algae to. I'm getting ready to run 100 Cornish cross, in tractors, 15 birds per tractor, and using 6 or 8" PVC as water storage with 1-1/2 PVC as the runner for the nipples/cups. All thoughts and ideas welcome