Outstanding, that thing is a beast haha. Thanks so much for the detailed explanation and pictures. I am building a stand for my new tank with the same footprint and when I saw the two large openings, that design looked like a great fit.
I run bioreactors on all my tanks and am also planning on using a large amount of the seeded media I have with thin film layer built up already to jump start my new reactor/tank. Ive been curious as to how long it would take to fully build up the TFP with all new media was why I asked. Ive read its in the range of 6 - 12 weeks but most of the application is geared toward large water volume koi ponds instead of large heavily stocked aquariums.