Hey Midnight,
Beautiful job!!! I just spent the majority of 2 hours reading all of the 217 posts. My wife keeps looking at me very weirdly. I think she is concerned that this project that I am contemplating is gonna become huge.
I really like to see your use of timbre as a frame for the liner. I am thinking of using 12x2's. I am hoping to have a (L)16'x(W)5.5'(D)4'. I would like to have 2' above and 2' below sloping down to 4.5' at its lowest point. I am planning on using treated wood. I really like your idea about using the styrafoam.
I look forward to wacthing for more up dates. By the way I plan on using a self made Bio filter using a 150 gal Rubbermaid Stock tank just as describe @ Skippysstuff.com.
Well, anyway keep up the good work and I'll see if I can start a "Midnight" telethon here on the west coast.
You Rock!!