Live plant question?

What kind of ligths are you using? That will tell you what kind of plants you can get.

Java fern and java moss, they're hardy and thrive in low light conditions.

Piranha01;3753904; said:

100W Lights

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100 watts on a 20G tank is plenty of light, even using the old watts-per-gallon rule . . . spectrum counts too; plants do best in light that is 5500K to 10,000K

what is your substrate (gravel)? if you have basic pea-size gravel or smaller, then that is a decent start . . . if you have sand, that is not necessarily great for plants, but can work . . . in either case, you might want to mix in some laterite or use root-tabs if you want rooted plants