I've given thought to doing something similar. Using used tanks from craigslist for the glass to build plywood tanks. I figured it might be a good method for building a first plywood tank without dropping too much into the glass/acrylic window.
I'd like to see which design you actually pick with the time comes lol
I'm excited to see the progress on your 4300 much more though
BTW I used to live in NOLA and miss it very much... do me a favor and savor some southern cookin for me... and a half dozen beignets! And oh yeah.... GEAUX SAINTS!
I think this is a fabulous idea! I have a 120 gal taken apart in my basement that I was going to just buy a new piece of glass for and put it back together but I think you just changed my mind. I'm really looking forward to seeing how this takes shape.