Any tank is good for plants (unless you have a 30' deep tank...
LOL. 2wpg is the limit if you do not want to use
CO2 injection. Low light plants do well in this environment. If you do go with high light (over 2wpg), you will need
CO2.
The light strip that came with the tank is obviously nowhere near this level. You can purchase higher wattage bulbs (2pin) without a problem online or at your
LFS store.
Here's a sample:
http://www.bigalsonline.com/catalog/product.xml?product_id=32043;category_id=1845;pcid1=1843;pcid2=