It's possible. As aqua chem mentioned, the amount of light will dictate the necessity of CO2 (or liquid equivalent). In my case, when I went from a low light to a medium light, there was increased plant growth. However, after the addition of CO2 plant growth was significant.
In contrast, I am getting pretty good results from the same low light fixture (dual T5 NO) on my shrimp tank. No liquid or substrate ferts added. Just water changes and shrimp feedings. Growth is slow. I feel that the crypts look nicer in the lower lighted tank compared to the medium light tank.