Getting pods to populate isn't too difficult. You just need an area where they can't be hunted to extinction, give them some food and they are happy to multiply and make more. They are happy to flourish on any kind of surface area. So lots of rubble rock provides them with lots of nooks and crannies to live in. Then dose a good live phytoplankton and nature will take care of it for you.
When you upgrade to a bigger tank in the future, if you get something with a sump, and you build a refugium in the sump this is a great asset for pod population. I have lots of rock in my system (700lbs in display tank, 500lbs in outside sump) I am able to keep well fed: 2 Obese target mandarins, 2 regular mandarins, 2 red scooters, 2 dragon faced pipes, 2 Australian blue lined pipes and a pair of Janns pipefish. Plus a whole assortment of angel fish that are always picking off the rocks.
Dave B