hello again i am trying to to place my refugium behind my tank in the same room with a floor protien skimmer and i will need a mack drive pump #5 and all hose hook up, 20 gallon tank probaly a new tank, and if i can just do a over flow box will also work with cr194 that i have but do not like to siphon the water back the small tank.i have plenty of room behind my tank. thanks gerald.