Am I the only one that doesn't run his refugium during the day in his bedroom or something? Where do you guys have your tanks and when do you run your refugium that this is an issue? Mine runs in my office down the hall while I'm sleeping, not my bedroom. Can't hear it unless I'm in my office, leave the door wide open.I purchased the 150w growstar and while it’s a nice light I’m returning it because the fan is soooooo loud. My tank isn’t quiet by any means but the high pitched whine of this fan is just too much.