Well, the Didiplis Diandra , Rotala Macandra, Ludwigia Repens, and the Mermaid weed will grow tall. L. aromatica is kind of big.. but I might change my mind and get some or some Ludiwigia inclinata "cuba" (I LOVE that stuff!). You know you can cook with L. aromatica. The Downoi and the dwarf Lobelia are low-growing stem plants, particularly the Downoi. I dunno.. the tank just looks clean-cut.
Aww thanks man!