OK, so without getting too in depth into the science of CO2 and plant health, I have a question to pose:
Plants utilize carbon dioxide (CO2) to maximize photosynthesis. Ambient CO2 in normal atmospheric conditions sits at about the 350 PPM range.
The conventional wisdom on artificially increasing CO2 saturation in a grow space is to try to hit a target range of 1200 PPM-1500 PPM. There are many ways of accomplishing this task: CO2 tanks and regulators, using CO2 burners on propane or natural gas, or utilizing a natural decomposition process like Exhale bags. I’ve even used the off-gas from my brewery to enrich the CO2 levels in a small cultivation space!
But I digress…
I’ve spent the last few years experimenting with lower CO2 levels and optimizing photosynthesis. What I have discovered is that if I stay in the 900-1000 PPM range, I find my yields are no bigger than when I go to the 1200 PPM or even 1500 PPM range.
I’m curious if/what other growers here on GNET have found…please let me know!