MrMup are you talking about the 72 or 25? If you mean the 25 the background plant, left and right is ambulia (limnophila sessiflora). It's taken quite a bit of pruning to get the left side that thick. The grassy plant in the front is dwarf sag, sagittaria subdulata.
Beviking I agree that tall canopies often look out of place. I got the tank custom made for the space because the 15 gallon I had originally (12" tall) looked really weird.