Here's my 100 liter (appr. 25 gal) tank that I've been working on and off for some time:
Some plants that I'm growing.
Tonia sp Belem is doing very well:
Rotala sp Vietnam, very nice plant that I got from Nolan (NolanW):
Tonia sp Fluviatilis:
Ludwigia sp Cuba, very nice, grows very fast:
You know what this plant is
Blyxa Japonica (thank you, Momo):
Eriocaulon C., grows very well:
Other plants in the tank are some Ericaulaceae sp and Ludwigia Arcuata.
Let me know if you have any questions!