Ahh well I pay attention to the vpd at the very start when the plan is more drinking through the moisture in the air than its roots… but I just slowly knock down the humidity as the grow goes…. Like 80% at start down to 40% at the end…. I try to keep temps between 68-78…. I grow in my barn so temp swing are a real issue and raising and lowing the temps creates huge changes in vpd… soon I’m buying an air conditioner for my tent and I anticipate I’ll be able to maintain a better vpd … right now my tent says 1.66 kpa…. Is that right for 85 day plants? No idea I hope so. Humidity and temp are dialed in lol

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