Temp and Humidity questions fellas!

I recently read that the ideal temperature for cannabis is 74F.

My plants are killing it with 82F and 70% RH. This is what gave me the idea to go that route.

I tested the vent fans on continuous which gave me about 75F (I varied the RH from 40-70%) and they stopped growing compared to the 82F ~70% RH.

You gotta dial it in yourself.

You want little higher humidity during veg growth then lower humidity during flower.

Veg: Lights on Temp = 78-82 degrees F, 50-70% RH, Lights off Temp = 68-72 degrees F

Flower: Same Temps, 40-55% RH.

I also discovered that LED temps don't heat leaves like HID/MH.... My leaf surface temp was 69F : )

Alazzzar said:

What temperature causes slow growth?

What is, too cold in ur Grow room?
I think we all can agree 30c is max..

Anyways..
Does temp/humid have a big effect on growth?

And what’s the perfect temperature and humidity in all stages?

Does plant grow slower in flowering than veg?

Click to expand...

What temperature causes slow growth? any temp below 15c/65f?

What is, too cold in ur Grow room? as above check stems for red coloring is sap stalling

I think we all can agree 30c is max.. bull. 54c max for sativas 38c is high for indicas (see vdp too)

Does temp/humid have a big effect on growth? see vapor pressure defiet on wiki

And what’s the perfect temperature and humidity in all stages? read a book or spend hours on stoner science on this site

Does plant grow slower in flowering than veg? ..naturally, its a different phase of growth

good luck

I may have just shot me snow shoe off, check this interesting vid for great details


cheers