Today, on a whim, I decided to change the substrate in this aquarium. I have some Estes Black Sand on hand that I've been planning to use with peat moss in an HC emersed setup. Well I went ahead and used some as the new substrate in the pico. I think it looks awesome! The grain size is much more appropriate for the size of the aquarium and made planting the HC foreground MUCH easier.
Current plants are HC foreground, Anubias nana 'petite' in the midground, Flame Moss on the driftwood, and Microsword in the background. It's looking a bit sparse at the moment since I had to replant the foreground and retied the moss since the lower portion was looking rather raggedy. I'll try to get an updated picture soon.