There isn't another calculator on the marketplace... might have to do it manually!
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Dont know if I'm allowed to post links here..... but i found this online calculator that seems to be working better, giving me vpd of 1.49.
But why is there room vpd and leaf vpd (LVPD), should they both read the same vpd measurement?
Last edited by gardro; 08-01-21 at 03:06 AM.
No links please.
Measure your leaf temps with an infrared thermometer.
Blue61 (08-01-21), GEORGE (08-01-21), IceCalibur (08-01-21)
I got an IR thermometer, my leaf temps were 24° first time, I dropped the lights a smidge and checked later and they were 27-28°.
VPD controller??? Thanks, I'll check that out.
Which reading do I reference on the vpd chart?
Room 25°
RH 50%
Room vpd 1.59 kpa
Leaf temp 24°
Then its got:
Leaf vpd 1.40 kpa
But can obviously only match one to the vpd chart, unless I match the 2 numbers of course.
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