Believe it or not the placement of everything involved no real planning. I just put the hard ornaments in and put the plants in as far as order of height and rather haphazardly. I do have to move some around soon.Amazing! and as someone else posted - jealous. I have a 75 gal that I'm at the beginning stages with, man I would love to have that space to work with. I like they way you have everything placed. Good job.