Following along there ReefkprZ
Your pretty correct you will find that will all surge devices you will have some induction of air bubbles into the display tank...some designs worse than others....I've actually been working out surge devices for my new setup and been working with another reefer who had them built for her custom tank...
I don't think you'll actually gain anything from all the extra plumbing and "S" snake work though.....SaraB over on -- uses the surge tanks, her friend Rod built them and tweak them, and I've been picking both their minds on the tanks....The idea I thought of, would adding a "vent" line to the line going into the tank have any affect on bubbles emitted into the DT?????
Also height pipe diameter will affect flow surge to the tank as well.....
I'm going to start playing myself here shortly!!!!!