VPD? is this a real concern?

[mndovrmtr420]

Just read the awesome post by earl in CC's forums on VPD (vapor pressure deficit). hXXp://forums.cannabisculture.com/forums/ubbthreads.php?ubb=showflat&Number=1354421&fpart=4. Never heard of this, and am wondering if this is somthing of a real concern as i do not monitor my humidity lvs. I too get water puddling under leaves that touch each other, might even explain alot of ppls post on problems/deficiencies folks cant quit seem to catogarize. Great read none the less. The link was given by someone else on these forums, dont wanna take credit for being the one to introduce it here.

 

[maineharvest]

Good stuff. I wish I understood half of it

 

[GreenMachine90]

very very interesting.. especially high hehe..

GM90

 

[umbra]

Its not an issue for most, and if it was you'd have a hard time knowing it. Just keep temps in the 70's to lower 80's and keep RH@60%-40% range and you're good.

 

[Kcar]

If you've ever had water condensing out the air onto your
leaves or on the sides of your grow room, then you've
suffered VPD. I have my extractor fan on a attic thermostat
that would shut off if the incoming air is too cold. And I would get
condesation on the sides of my grow room. My solution is a oil-filled
radiator on the intake side when it's really cold out.
Really seems to make a big difference...