I only made it it one store while I was in Chicago, but it was a good one (Shotank). The owner, Mat, was very hospitable and very knowledgeable. He's been in this business two years longer than me (since 1985) so he can retire earlier I guess. The 1350 gallon reef at his shop reminded me of someone else's tank, but I can't quite peg who's
I learned a few things from seeing his tank and confirmed a few others I had always suspected. The tank is 18'L x 2.5'W x 4'H by my estimation. It's a two-sided tank with one side adjacent to a large window. The side with natural light had far better coral growth but very limited coraline growth. It may be due to UV from the sun, but I'm not sure how much UV penetrates a glass window and a 2" thick acrylic wall? Not enough for a sun tan anyway
He had at least one parrotfish in there. The one he has is a herbivore, but some of the other varieties are coral crunchers. The herbivourous parrotfish don't eat coraline algae to my knowledge but they inadvertently do so as they scrape the rocks of green slime and filamentous (hair) algae. They also eat burrowing alage that gets beneath the surface of the rock. You can actually hear parrotfish crunching rocks on natural reefs as they are one of the primary producers of crushed coral substrate. The Parrotfish in the display at Shotank didn't appear to be bothering the corals and the impact on the rock wasn't significant. Maybe we can talk Peter into a school of parrots so we can establish exactly which ones eat corals
http://z00n.net/wp-content/gallery/fish/Parrotfish_Scaridae/Stoplight_Parrotfish_terminal.jpg They are like saltwater koi with every colour of the rainbow.
http://www.animalpicturesarchive.com/ArchOLD-6/1187575211.jpg http://chemistry.csudh.edu/faculty/jim/coz2008web/parrot.jpg
As far as the temperature debate goes, his tank was at 84F while I was there, but he mentioned it goes down to 76F in the winter. He had two fans to cool it, with no chiller.
The rock work was exceptionally nice, just dry stacked with nothing fancy to hold it together other than experience, skill and some big keystones & bridge stones. The equipment is tucked away in a 2' wide closet. I couldn't see everything but it appeared to be running on a modest sized protein skimmer, refugium, and a few media reactors/bags. I think I saw calcium reactor? Anyway, my point is you can have a very successful reef tank while keeping it simple.
Back to Peter's tank... yes, I agree... keep the skimmer stock for at least six months so you can properly evaluate it before making any mods. This is an experiment that we are all eagerly watching. The whole idea of exhausting resources on improving protein skimming is debatable as they do have their limitations, but the point of this hobby is finding a better/simpler way so every little bit helps.
Your goal should be to dot every "I" and cross every "T" until you are sure everything is running smoothly. Then you can start unplugging devices to establish which one is puling the weight. I'm sure we will be surprised when we find out where success lies.