We're setting up our first reef tank and have decided to go with a 210 gal set up. I've got the lighting , tank, skimmer etc all sized for the tank and ready to be picked up with the tank/stand in another 2 weeks. MY BIG QUESTION is that someone asked me if I wanted to add a refugium - so I had to first find out what it was - researched it - and now I know. My burning question (I want to do right by the animals) is it really a benefit to have a refuge for the system or will conventional (skimmer, sterilizer, etc) filtration system do the job just as well ? I've gotten 2 different answers and am of course confused. Will some of you who have experience with these systems/refuges give me some guidance on why I should add one as well as what to look for in a refugium as well as what to avoid. My main interest is in keeping the reef aquarium critters healthy and happy. Please HELP !!