vpd is the same light for light. You have to run leds warmer to get the leaf temp up higher if running co2 I'm running roi 680s in two of my rooms they tend to run around 80 to 87 degrees depending on plant time ie veg, flower mid flower or im getting close to the end. I then merry up the rh to hit my target kVa. I try to keep it right around 1.0 to 1.5 kVA. You won’t find this in the manual and it’s different for each person given their level of control for their environment.
this is today of my room that just switched to flower Saturday. Those are all roi680s 1st gen
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