Planted Tank Guru
Join Date: Sep 2004
Location: Garden City, KS
You definitely don't need CO2, especially with low-light. But that being said, CO2 only helps things, regardless of the amount of light. So when you're ready, I highly recommend you visit greenleafaquariums.com to purchase a system. The owner, Orlando, is a frequent poster here, and I think you'll find him very helpful. I know I did!
DIY co2 sucks (even though it does work), and I think it's safe to say I'll never bother with that mess ever again!