The refugium is an often overlooked item on a marine aquarium that is usually not a pretty sight. Where the display is full of beautiful corals and vibrant fish, the refugium is overgrown with algae and you can barely see past the gunk growing on the glass to be able to appreciate any of the life down there. But the refugium should be treated this way. Life is beautiful in all forms and we shouldn’t neglect the unique algae-filled environment. So, trim back that algae every once in a while and use a magnetic scraper to clean the glass from time to time. Gaze at the amazing invertebrates that have taken up refuge there and maybe even use it as a safe haven for some small exotic fish.