From what you talk about on the main forum, it sounds like one of your main problems is simply a lack of light. The standard strip of light that comes with a tank is hardly enough to grow anything. If you could place two striplights on that 20g, than you could start growing hardy plants that you won't have to replace --you could always do a non-CO2 method.
Anyways, I'm a college student who goes to the University of Chicago, but I was born and raised in Miami, Florida. I've been keeping fish for a very long time (~13-14 years) from everything to gouramis to tetras to discus to apistos. Inspired by the Dutch, I started making plans to go with planted tanks and initially went with 2 wpg PC lighting and DIY CO2 (those were the days...about 3-4 years ago). Then, I found Amano's beautiful work. I have been in two international aquascaping competitions so far, but I plan to enter a slew of 3 tanks this year. I almost went back to discus fish today at the LFS after swooning over a beautiful pair.
Oh, I have a disease called plant collectoritis... now I'm concentrating on Brazilian plants that haven't ever been tested for aquaria. I also like to grow a lot of my aquarium plants emersed in a miniature (relatively cheap) plastic greenhouse. That's pretty much me, at least as far as the aquarium world is concerned.
Picture of my one month old layout (20g):
Picture of me: