I use glued joints for all my fittings, aside from the ones that mount to the top of the reactors and the ones that thread into the Red Sea return assemblies.
Many thanks!! I had my tank sitting in the garage since getting it on Black Friday. Thought I'd get it up during Christmas break, but that ended up being more kid time than dad toy time. Finally getting around to setting it up now.
I'll post pics and start a build thread soon.