Custom built shelving system using ceramic pot drip nozzles and lots of other 3D printed parts. I had to test a few different sizes (scaling) of the drip nozzles until I found a good fit, but once I did, they seem to be working perfectly. Thanks to 3dprintler for sharing his 3D Ponics designs!!
3D Ponics: https://www.3dponics.com
Shelf bracket: https://www.thingiverse.com/thing:1259505
Feeder hanger/bracket: https://www.thingiverse.com/thing:2543565
Hummingbird feeder: https://www.thingiverse.com/thing:77439
Drip Emitter V3 (Wings): https://www.thingiverse.com/thing:917976