here ya go. Sorry it's a bit fuzzy. RODI gravity fed in through the long white tube on the right. Larger diameter tube in the middle is on the powerhead output. The minijet powerhead is on a digital timer to run for 1 minute a couple times a day. Kalk output to a float valve in the sump is through the JG fitting in the center of the lid. It's tapped into the lid, but not connected to any tube inside, so it draws from the top of the reactor.
This was a really quick build. Approximately an evening.
Nate