VPD Part 2, acceptable range??

Username85

Well-Known Member
Posted a thread last week about VPD, I was waiting for an infrared thermometer before I could accurately gauge my VPD.
Results are in and I just want to check and make sure this range is acceptable.
My plants are in early veg, from what I’ve read I want a kPa range of 0.4~0.8.
I just checked my numbers and it comes out to 0.77kPa, which I know is within range, BUT my air temp is 71°(21.6), 70%RH, & leaf temp of 71°(21.6).
I know plants under LED prefer a little more temp in the room, but since my VPD is within range is the air temp a concern?
 
VPD tells you if you are in range for a given temp. It does not eliminate the need to optimize temps. They will grow slower at that temp, likely fine but possibly some uptake issues if that temp never increases.
 
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