>Don't feel that you _have_ to add CO2 to your tank. While this will >certainly give you the most options, it is _completely_ possible to have a >lovely, healthy, lush "low tech" set-up as long as you find the proper >balance and use the right plants. While I have 2 "high-tech" planted tanks >that I enjoy immensely, to the casual observer, my "low-tech" tanks are just >as pretty. What kind of lighting do you use on your "low-tech" tanks? Wendy