this looks awesome.....not sure i get what the waste water is doing? I guess its going behind all of that? And the drain in the sump, is that for water changes?
Being that your doing this in your garage it should be pretty simple for you to automate this as much as possible! I would talk to Rogger about automating these things. His tank is like a robot. And with your controller it'd be fairly easy to do.
You'll be super happy with Felix's work.....I was.