Russ, from what I could gather, the pond is 16,000 gallons and 12 feet deep with three air diffuser main drains centered in a rectangular hopper bottem. Spray on liner over foam block masonry filled with rebar and concrete.
Equipment room housed three systems, all with vortec settling chambers, turbo vortec pre-filters and two large bead filters. One additional system collects skimmer water with a turbo vortec that also has a bi-pass heater loop, looks to be a propane heater with a marine heat exchanger. There are three air pumps. Did not notice UV lights, but I have to think they are in there somewhere. Variable rate speed pumps on all systems, I have left out manuf. names etc., I did not pack my pencil and paper for references.
Gill Gillman put the system together, and I'm sure Chris knows what she has, so if she reads this maybe she will fill in the many blanks I have not covered.
From what I could see, the system performs very well, lots of water moving with I think 12 TPR's that are reversable as well.