Looking at this thread and all the dogmatic answers makes me SO glad I quit CO2 and went back to low-tech. I'm sure that there is some good information here, but my tank is finally algae free, lush, and green and I am pretty happy!
still trying to sell my CO2 setup, though!
Trust me, if I can't figure out this issue within the next few months, I'm going to be pulling the plug myself. And if I were to try it again at some point, it would probably be on a nano