Starting a 20gal planted tank...?

[maymaycares]

Ok so I picked up my used 20gal aquarium today. The light is a lavender-ish color and the man who sold it to me said it's for growing plants (which was exactly what I'd like to do, but I was just planning on doing a lowlight tank because I didn't think I could afford the bulb or keep up with the plants) but did not know anything else about it. Anyways I think I'll just stick to lowlight because I've never had a planted aquarium before. I did some research and decided I wanted to get a driftwood piece that would take up the length of my tank, but I won't be back to the beach in a few weeks. If I added plants, would I be able to put the driftwood in after the fact or should I wait? Also I would really like a carpet of something like dwarf baby tears but they're high light, is there anything else that would make a great carpet?

 

[maymaycares]

ALSO, I don't think I can afford to have a co2 system, or is there a cheap and easy way?

 

[HN1]

If the bulb fits a stock hood, it will not be "high light". Depending on the age of the bulb, it may need to be replaced anyways. The addition of the driftwood later should be fine. Just be sure to soak it properly first.

There are plenty of DIY CO2 options.
DIY CO2 Guide with Pictures & Recipes - DIY Aquarium Projects - Aquatic Plant Central

 

[mgamer20o0]

excel is another good option too for co2. what type of lighting do you have now? a option would be CFL bulbs if you want to get more light into the tank.