I was wondering if anyone made their own waterer like the "chicken fountain? I would like to make one since it is a little pricey for me at $70. I like the set up and it says it is a passive flow unit with no regulator so I was trying to figure out that part of it. I know about the pvc and nipples.?i liked the cap for adding ACV etc and hooking up to a garden hose. If anyone has done this model can you share your experience? I am not really interested in the 5 gallon bucket model. Just something like this. Thanks!