I've never owned them but like you, did "get the bug" and researched quite a bit a few years back. My experiences keeping seahorses combined with the reading up on FE pipefish I did discouraged me from trying a small group. My plan then was to set up a 30 long and partition off 1/3rd of it where the fish couldn't get to for pods to produce. At the time, Lee's made a divider with big enough openings for scuds and such to pass through (they still may, just haven't seen one in years). I tend to have huge populations of these in my shrimp only tanks and had thoughts of keeping a food colony within the tank that couldn't be reached to become exhausted. I seem to recall videos on YouTube of people feeding them prepared frozen foods, but many articles are out there saying that most won't.
Unaware of a live brine feeder or even how on earth you could create one. The reservoir would need to be aerated, it would be near impossible to dose a consistent amount, and would add salt to your tank. Not saying no one has done it, but seems a very tall order.
If you do set up a tank for these, this will be one tank journal I'd hit the subscribe button for! Good luck.
Nothing good happens fast in an ecosystem.