With this imaginary template over the front pane of your tank, you can place lines and points of interest at these locations to create a visually pleasing layout.
[Fig. 1]: With the Rule of Thirds grid, the four lines and the four intersections of these lines are the foundation of the rule of thirds. With this imaginary template over the front pane of your tank, you can place lines and points of interest at these locations to create a visually pleasing layout.