Thanks!
So, starting to think I want to try and get the tank stocked with pods. I have plenty of life in the tank, small tube worms, spaghetti worms, bristle worms, but no visible pod population. When picking up the cardinals, LFS had 3 mandarins in stock. When I was first planning this tank, I was considering dedicating it to raising a mandarin. Decided against it because of the challenge, honestly wanted my first bigger tank to be more simplified and stocked with easy to care for fish. I am already regretting this, because the fish looks awesome.
So, since the busy summer months fast approaching, I am planning on letting the tank just grow out for a while, without adding much else. In the meantime, I am considering setting up my 10 gallon tank again, and dedicate it to raising pods, and stocking the DT with pods as well. I figure a few months of adding tons and tons of pods to the tank, along with keeping a good culture going in the separate 10 gallon tank, I should be able to maintain enough of a population to successfully keep a mandarin. We'll see. At the very least it will be a good experiment in setting up the tank to culture pods.