According to the paper “Photosynthetic response of Cannabis sativa”
At 77 F, rate of photosynthesis increased with increasing PPFD, but this trend peaked with 1500 μmol m-2s-1 PPFD, 86 F, and decreased at higher light intensities.
So there lies our sweet spot.
An interesting note on the action of intercellular Co2 under high levels of light.
A continuous decrease in intercellular CO2 concentration (Ci) and therefore, in the ratio of intercellular CO2 to ambient CO2 concentration (Ci/Ca) was observed with the increase in temperature and PPFD. However, the decrease was less pronounced at light intensities above 1500 μmol m−2s−1.
