This is the newest addition to my growing collection of tanks. I couldn't find riccia or glosso, but I did find a small-leaved Bacopa. Some of the stems were growing horizontal already, so I'm hoping I'll be able to pich off longer stems and coax into growing along the gravel. It's a bit messy looking, but I wanted to post a picture - if the Bacopa works out I can post before and after pics once it grows in 
Specs:
6.5" x 6.5" x 6.5" glass cube vase
Red Sea nano filter with sponge insert
13W 4100K PC desk lamp
Hagen Geosystems fine gravel
Hagen Geosystems polyresin driftwood
Anubias barteri var. nana
Bacopa australis
Specs:
6.5" x 6.5" x 6.5" glass cube vase
Red Sea nano filter with sponge insert
13W 4100K PC desk lamp
Hagen Geosystems fine gravel
Hagen Geosystems polyresin driftwood
Anubias barteri var. nana
Bacopa australis