I love this thread. Really learned alot!! And I can see myself getting into this someday. With that said what's to be said for the simpler approach of just letting them populate naturally? What I mean is, start a culture in your tank, add a fuge, and see what happens. Let them balance out naturally, meaning the population will adjust based on the available food and predators. I've taken this approach by building 4x 10g tanks onto my setup to use as fuges. I also have a 75g sump that acts as a fuge. I purchased an awesome culture from Chad and feed them every day or so, both fish pellets and (I think) reef roids). the populations in my fuges are awesome. The first 10g tank is like a darn zoo! It has copepods, amphipods, and mysis. I'm sure they're all eating each other

The top 10g tank drains into one beneath it and so forth. The 4th 10g tank flows back into my sump right by the return pump. I figure as long as I keep the critters in my fuges fed they will continue to populate my display tank.
Thoughts? I'm thinking the first answer is this method is great if you dont have alot of spaces for fuges and/or you have more dependent animals (ie - mandarins) than your fuges can naturally feed.
Will keep watching this great thread. thanks!!