I’ll be setting up my old 12g nanocube as a quarantine tank and wondered about the best filtration options for a tank this size. I know from past experiences that nano skimmers are pretty much useless. I thought about a small refugium (I’ve never run one before). I would do 10% water changes weekly as maintenance. The chambers in the back are pretty small. I’m not wanting a complicated setup because the tank is only for QT. I’d probably keep one fish in it. My DT is LPS/softie only so I don’t need SPS-like levels in the QT (and wonder if a refugium might keep nutrient levels too low). Any help is greatly appreciated!!