vapor pressure deficit (vpd

Quick question, just got this Leaf laser from AC Infinity. What exactly is it trying to tell me after scanning my leaves? I have my VPD set and controlled for flower, but the VPD chart(pulse chart)is lower than what showing on the scanner. Is it telling me that my true VPD should be 1.71 and not...

So, in my flower room i have (4) 700watt led lights that are over 8 large plants (gotta grow them big due to numbers restrictions). I have different stages of flowering plants in this sealed grow room that i have 1200ppm of co2 in. I have a mini split and a big dehumidifier so i can dial in the...

Vapor pressure deficit (VPD) isn't a term you'll find in the first few chapters of a cannabis growing guide. Heck, there are plenty of experienced cultivators who don't fully understand the intricacies of VPD. Although monitoring VPD is an advanced growing technique, there are benefits to...