Wow. Excellent work. The fact that this is in IL means you're going to be my template when I build mine next year. Will you be accepting work as a consultant next summer?
That's a perfect nook for that tank too. I am going to be such a pain in the ass when looking at houses to buy because I'll place so much importance on the layout of the basement and how it'll fit into my tank building plans. Major bonus points will go to any house with outdoor access to the basement. (Why did they stop doing this? The old house I grew up in in NY had exterior double doors but no new houses ever think to do this anymore.)
Keep up the good work. Can't wait to see the finished product (and then copy it, heh).