I have a 180 gallon tank that returns its water to a 45 gallon refugium, which then returns water to a 50 gallon sump. I have about 60 lbs of live sand and about 30 lbs of live rock in the refugium now. I recently purchased some macroalgae and some copepods also to put in there. My question now, is should I have a clean up crew (snails, crabs, starfish etc...) in the refugium?


