I'm upgrading to a 46 Bow with a 6G refugium on it (52g total)... the fuge is running on my 20G that has been running for almost a year and is completely crawling with pods. I'm assuming a mandarin would be fine in that system, but I do have a fairy wrasse and was wondering if that one fish would be able to eat enough pods to keep the dragonet from being fat and happy in a tank of that size.