A view from the top left. The cpvc running up the back is from another powerhead (not connected to the Wavemaster) for my uv sterlizer. It empties on the other side of the tank. That was the only place I had room on the back for it to go (I have a 5' spraybar I made for the return from my 1200 GPH sump). I runs down into the right side cage and with the use of a couple more cpvc elbows keeps my xenia moving.