How do you take care of fish tank plants?

I bought a plant for my tank and it seems to be dying off. The Petsmart worker said I just need light for it. Am I doing something wrong?
I’m not sure what type of plant I have, it’s from petmarts. The plant is looks like leaves that re purple on one side and green on the other. I’m not sure what type of light I have as well, I have the Eclipse 6 set up.

I will have lots of tall fake grass, a few rocks and such. What tropical fish go together good? This is a pure display tank for show in my house. I want some swimming at the top, bottom and throughout the entire tank. They also have to live well with eachother and make a beautifully scene. Thanks to all legitimate answers!


Other Fish Information

    it will be a FOWLR and I plan to put about 30lbs of Live Rock in the tank. I have a Marineland Emperor 400 filter, an Emperor 280, and a Fluval 100 watt heater.


    Other Fish Information

      Powered by Yahoo! Answers