One thing that I needed to mention and failed to in original post is the part of the neck that attaches to the cup has a small piece of acrylic missing. The piece is on the inside (female) part of where the neck attaches to cup. It was that way when I got it and doesn't effect preformance at all. I notice a small seepage from that area whenever I clean it and put it all back together but generally stops in a day or 2. Once again, it is insignificant to the preformance and use.
Also, I do not use the recirc mod (which is really 2 extra holes in the column) have not seen any benefit from using that mod, but it was there when I bought it and can be used at any time.
Footprint, due to the gateway mod, is approx 11x12... the gateway outlet pipe can be rotated to different sides as needed.
BTW, it is currently running in my 125g, so it is in actual use for several months now.