I believe it is a nana variety. I've had it about 2 months maybe. Its in a 10 gallon with 100% red sea substrate, co2
at about 20ppm (trying to get it higher), and 2x13 watt pc
lighting on for about 13 hours. I fertilize with flourish once a week, potash and iron every day, and trace 3 times a week.
It hasn't opened yet, but the stem has grown about 2 inches since I took that picture!