Kola_Kreator
Well-Known Member
Don't run 35. Even if you have CO2. 35 degrees C is too hot for any setup. What vpd chart targets 35?
What temperature for grow tent LEDs
- Thread starter meerkat67
- Start date
coreywebster
Well-Known Member
26 c is a good place to aim
Nugnewbie
Well-Known Member
The Downlow On Vapor Pressure Density — How Does VPD Affect Cannabis Plants?
Vapor pressure deficit (VPD) isn't a term you'll find in the first few chapters of a cannabis growing guide. Heck, there are plenty of experienced cultivators who don't fully understand the intricacies of VPD. Although monitoring VPD is an advanced growing technique, there are benefits to...
www.rollitup.org
Here's a thread that seems to explain VPD quite well.
Kola_Kreator
Well-Known Member
I need one of these in my life.
Kola_Kreator
Well-Known Member
It's great if you have the control to be able to hit the vpd range. But if you want something simple just aim for 27 degrees C all the time. And drop the humidity through each stage. 70 for seedling or 75-90 for clone then 70 when rooted, 55-60 for veg, 50 for early flower, 45 for late flower. If you learn how to run something close to this you will get good results.
DanKiller
Well-Known Member
Its far from optimum, but it's good and troubleless range to be in no doubt.
Reekwind
Member
Canopy: 25-28
Root zone +18
Most of us measure at a single point in our rooms/tents which is hardly a scientific approach but a good indicator, and temps can easily differ 5 degrees C from canopy to root zone.
When switching from HPS to LED you also change the way your lights put out heat.
HPS has a lot more irradiation heat than LED where most of the heat dissipates upwards through the heatsinks.
So, your leaf surface temperature and root zone temperature are affected by the change and you may have to adjust other grow parameters accordingly
Root zone +18
Most of us measure at a single point in our rooms/tents which is hardly a scientific approach but a good indicator, and temps can easily differ 5 degrees C from canopy to root zone.
When switching from HPS to LED you also change the way your lights put out heat.
HPS has a lot more irradiation heat than LED where most of the heat dissipates upwards through the heatsinks.
So, your leaf surface temperature and root zone temperature are affected by the change and you may have to adjust other grow parameters accordingly
amneziaHaze
Well-Known Member
thats just the highest temperature most documented that plant still grows. i personally would like to go 20-25 but usually i leave it all to nature.i dont chase max yield
