Generally, there is many different approaches that are taken for different aspects of the build. Research palu's on here and ask lots of questions if in doubt. There is no single correct way of doing anything, but people have learned that there are some things you definitely don't want to do
If not positive on how you're constructing everything, then I recommend pausing the construction to plan, research, revise, research some more, and then plan some more
. Then make more necessary adjustments as you go
! Like I said, you won't regret it! With a nice size tank like that and the time/money invested in it, you'll definitely appreciate getting it mostly right the first time.