I also ditched my CO2 and went back to low-light. No ferts, no nothing. Just happy fish and happy plants. The plants grow slowly, but they seem pretty healthy to me and the look great.
I have been toying with the idea of turning back on the CO2, since I still have the whole setup (whole system for sale if anyone in Denver is looking). But, I don't want to put too much or my neocardina shrimp will stop breeding, and I'm starting to wonder what the point of adding CO2 would be.
If the plants grow a bit faster that doesn't really help me at all. There is nominal algae in the tank, and no problems that CO2 would fix.
So, now that it's been a few months I am pretty sure I just want to get rid of the CO2 and be done with it.
"The fewer our wants, the nearer we resemble the gods." — Socrates