Nice looking build! Looks like you rubbed a few people the wrong way making comments about "fake" drop offs.
I think the box in a box is a much safer design, I'm not sure I would trust that stress point in
my house! I will happily watch
your thread though! Hehe. Your pipes are noisy because of your drain design. Dual drains for Herbie overflow would be
dead silent. I have Herbies one 3 tanks now, won't do it any other way.