Here you go. My tank is in a wall with no water supply, so my RODI system is setup in the basement a floor below. First couple of pics show the setup in the basement.
Next is the top off system, which is in the cabinet below the tank. So water is made in the basement, and pumped upstairs to the topoff tank, or sump, depending on whether I want fresh RODI water, or salt water for changes (I have a switch mounted below the tank for each).
Finally, the tank (when I first set it up...it's come a long way since)
Hope this helps