Ok dude, question time ..
I promise no more Doctor Who jokes. (Ok I lied. Just one. Instead of rolling around shreiking "EX-TER-MI-NATE!!!" this one is saying "EX-TRA-SKIM-MATE!!!!")
Oh I am such a nerd... 
1. What's the main body construction? I swear it looks almost like a hot water heater coated in fibreglass. Except I know it can't be because they're like only 40 gallons...
2. I don't see where the venturi's are? Oh and I guess you have to inject the air with an air pump (I remember you were looking for a rather large air pump a week or two ago, I remember this because it piqued my interest then as to what you were up to...
). But you still have a venturi right?
Truly a work of art....