Join Date: Mar 2010
Location: Ontario, Canada
Not many people maintain plant-only tanks. Most often plants are added to an aquarium (with fish) since plants absorb unwanted nutrients, which helps maintain water quality for the fish. Alternatively, some people maintain plants in a sump (again for nutrient export) or keep a plant-only tank to grow plants that essentially serve as fish food.
If you do want to keep a plant-only tank, you will need to ensure that the tank has some form of surface movement (something to move the water on the surface) to prevent scum build-up and provide sufficient oxygen. You will also need appropriate lighting, since the plants need light to thrive. That said, too much lighting will lead to unwanted algae growth. There's no direct lighting on the tank in your link, so it may be inappropriate for plant growth.
Seems to me that, if you simply want decor, a really nice plant (no tank) would be a lot easier! But, if you decide you want to maintain a plant-only aquarium, you'll likely get the best information from a freshwater fish forum.
My main experience with water plants comes from a pond environment, where I had a bog, water lilies, etc., which is not entirely comparable to what you have in mind. I no longer have the pond (it was at my prior house), although I now maintain a large saltwater tank. Still, I miss my pond and my water lilies!