Regarding the pods, my understanding is that only the larva will go through the return pump and into the display. However fish eat the adults - and they're too big to go through the return pump, so they need to be fished out manually.
The larva will grow in the display tank and eventually become tasty morsels if they have the required nutrients in a safe place inside display tank.
The more I went down the pod/refugium wormhole yesterday the more I realized that the easiest way to get enough stock is to have a tank dedicated for them. I don't think I want to do that right now.
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