Hello, setting up a Tideline 21 AIO Nano Reef for the first time in over a decade. Curious, I have the tank, which came with filter sock and return pump, but the middle chamber is empty and has no media basket with it. What do folks put in there nowadays? With no basket I didn’t want to put any media. Would small pieces of rock work? I thought about a skimmer but wasn’t sure I wanted to start with that yet. Have dry rock for display area. Feel like I’m missing something…
