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Entry Date
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Nick Name
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Location
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Tuesday, June 23, 2026
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Richmond Dave
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Richmond, BC, Canada
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Entry 19 of 20 |
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My night time VPD is always very low. There are 2 reasons for this. Too cold an air temp. Too high a humidity. After 7 or 8pm, I always close up the greenhouse. That would stagnate the air and raise the humidity. As you can see from the graph that the VPD started increasing at 7:50 pm. That's the exact time I switched on my exhaust fans. Now I need to see what the VPD will be all night. Will get the recorded data in the morning. Stay tuned.
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