Its probably from the batch we pulled out during the Houston trip, we found it in a pond really overgrown with emersed sag it seemed pretty well shaded at the time so I think it should be okay in a low tech tank
I think pretty much every plant is fine in low light. I hear Tom, and diana always talking about the vast array of plants grown in this type of tank. It has to be a low amount of co2, and constant. But i think plants dont require a certain amount above a couple ppm. In nature they certainly get much less than 30.