I'm finally going to scape(sorta) my 20L. I have at least 4 maybe as many as 6 amazon swords. shipping only. Can't promise they will be completely algae free. This tank has had a green stringy algae that comes completely off by just pulling on it. It's definately not the dreaded BBA. These are nice, healthy, but not perfect plants. They are very good size however since they've been in a nitrate rich tank for well over a year now. If anyone wants them, shipping only($4). Thanks, ben....if you want, I can soak them in some water w/ Algae destroyer. When I've taken the time to dose the tank w/it, it clears up quickly. Let me know, b/c they go in the trash tomorrow. Thanks!