Am I missing something obvious? If you have the refugium on the right, wont that just be dead water? There will be no flow through it, will there? Seems like water would come into the left, overflow to the center then get pumped back to the DT without ever hitting the fuge area. If you split the overflow from the tank, it would have to get all the way to the top to overflow into the center section. I dont see how you could do this without splitting the overflow from the DT. If you didnt have the overflow from the tank going into the fuge area water from the tank would get pumped back up to the DT without getting over the last baffle.