Anubias Barteri Var Nana Tropica Live Aquarium Aquatic Plant
The plant just need to be attached to a piece of driftwood or a rock with a twist tie, fishing line, or nylon string
The roots systems of these plants are so versatile that they will wrap around and grow into whatever you tie them on to
Once the roots have developed a decent network you can remove the string holding them on; they will hold on their own. Another reason that people like nana is because they are very easy to maintain
Plus, it only requires small doses of fertilizer every now and then to stay nourished and healthy, not to mention that it doesn't need much co2 either