Do you have those projects that it takes you a while to get to, then when you do they were SO easy you kick yourself for putting them off? I have had all of the stuff to set up the automatic water system in the rabbitry and on the rabbit tractors for WEEKS. Every day when I fill bottles I think, I really need to install the automatic waterers. Between the heat, being busy and flat out procrastination I didn't do it until today. Wouldn't you know, it was SO easy and SO fast, I am still kicking myself for putting it off.
The system I have set up on the tractors and in the rabbitry is a very simply gravity system using a five gallon bucket for the reservoir, tubing, t connectors, these cool gizmos that keep the tubing off the cage so they can't chew it, other cool gizmos the sipper fits into to latch on the cage and the sippers themselves. I bought filtered connectors to go on the buckets but I did not use them I just drilled a hole and put the tubing straight into the bucket like we do for the auto waterers on the chicken tractors. I have not finished installing cages in the rabbitry but have all the pieces to run water to them easily when I hang the cages. I ordered everything but the buckets from:
Here are photos of how it is set up.