One of the most important elements of a successful Cannabis grow is air…specifically, the grow room temperature and relative humidity (RH). In this video, Rob …
47 responses to “Grow Room Humidity (RH) and Temperature For Indoor Cannabis Plants”
Rob I'm a huge fan and I have put in some real time watching your videos!!! Everything I have learned has been super helpful and now I'm finding myself in need of your help. The temp and RH in my grow room is all over the place and when I say all over the place I mean anywhere from 20% humidity to 95% and its constantly fluctuating. How do I maintain this and control it if it's this unpredictable? I have all the stats from my hydrometer and the read outside are so up down all around I am starting to get discouraged. Please help. Thanks so much.
I live right here in Michigan to I got a little one bedroom trailer just me and my wife and son but I filter grow room 4 x 4 out of the closet in the back properly ventilated and everything I got rich soil lights genetics the only thing is I can't keep moisture in there and what I do it just insulin turn to mildew
I'm down here in Benton Harbor, as you know Rob, Michigan winters are dry as shyte…just made me a DYI humidifier with a terrarium fogger/ mister I had (only a fish tank geek has one of those laying around…hehehe)…and my RH is much better. Come summer, that won't be an issue…hahaha…
This is truly ridiculous This 🙄 😒 is going on with you guys this is what is wrong in this world there is to many people who always assuming 🙄 shuff all the time it be different if you all were dealing but you guys are not if anything is that you guys help a lot of people that is just starting out and for that I think that is great and I hope you guys can Get everything taken care off and that they quit bugging you guys and let you guys keep doing what you do
And gots to smoke a bong hit for me some roughly every 2 hours den I rip my distance drivers very long with hella pow and athleticism. Mine hombres call me da Brahman of bud Gots chem “moondoggie”on tap from Saeed brah pronounced Si-eed yo
Yo blood that’s cool cause yo gots some tolerance yous hella baked brah yo eyes is baked lavaed. Bake lava I smoke hella reefer so I gots a high sir Lawrence of motherfucking tolerance
My grow room hovers between 45% and 55% RH, is that ok? Or do I need to buy a Dehumidifier for that extra 5%? I don't wanna spend 100 on a dehumidifier if I don't have to!
just started seeing a bit of powdery mildew can you give me the best dial back to get rid of that asap… i am using a really good garlicy spray that seem to make it better — it goes away and then kind of comes back
What about day and night temperature differences? I have heard it makes stems thicker and yields bigger? Should there be a 5 degree celsius difference, or is it a waste of energy to cool down?
I have two plants in veg (3 weeks old) in a 3x3x6 tent with only an exhaust fan (190 cfl). Multiple floor fans, dehumidifier. LED lights (600watts) Weather in this area jumps around. Some days really humid, others really dry. I'm really worried about when they are put into flower. Usually the humidity stays within 50-68%, but lately it's been very humid outside, and my tent won't get any lower than 70%…. any suggestions on how to help the humidity stay at a solid 50-55%?
VPD it all what matters
Thanks really help me a lot trying to get my climate right in my grow setup
Rob I'm a huge fan and I have put in some real time watching your videos!!! Everything I have learned has been super helpful and now I'm finding myself in need of your help. The temp and RH in my grow room is all over the place and when I say all over the place I mean anywhere from 20% humidity to 95% and its constantly fluctuating. How do I maintain this and control it if it's this unpredictable? I have all the stats from my hydrometer and the read outside are so up down all around I am starting to get discouraged. Please help. Thanks so much.
Is 64f an okay temp when the lights are off?
Cltv
I live right here in Michigan to I got a little one bedroom trailer just me and my wife and son but I filter grow room 4 x 4 out of the closet in the back properly ventilated and everything I got rich soil lights genetics the only thing is I can't keep moisture in there and what I do it just insulin turn to mildew
Wish I could send ya pics
Bro what do I do for some reason I cannot keep any moisture in my little trailer grow room and almond flour with 0% humidity is this going to hurt me
I'm down here in Benton Harbor, as you know Rob, Michigan winters are dry as shyte…just made me a DYI humidifier with a terrarium fogger/ mister I had (only a fish tank geek has one of those laying around…hehehe)…and my RH is much better. Come summer, that won't be an issue…hahaha…
Cltv just wondering you guys look familiar not a chance from Macomb County by chance?
This is truly ridiculous This 🙄 😒 is going on with you guys this is what is wrong in this world there is to many people who always assuming 🙄 shuff all the time it be different if you all were dealing but you guys are not if anything is that you guys help a lot of people that is just starting out and for that I think that is great and I hope you guys can Get everything taken care off and that they quit bugging you guys and let you guys keep doing what you do
Hi
Damn my humidity is at 25😞 I’m already halfway through my autoflower grow
salute bro I appreciate this no 🧢
Bro thank you soo much. I ve learn everything from you guys
How low should you go on temp late flower?
And gots to smoke a bong hit for me some roughly every 2 hours den I rip my distance drivers very long with hella pow and athleticism. Mine hombres call me da Brahman of bud
Gots chem “moondoggie”on tap from Saeed brah pronounced Si-eed yo
Yo blood that’s cool cause yo gots some tolerance yous hella baked brah yo eyes is baked lavaed. Bake lava I smoke hella reefer so I gots a high sir Lawrence of motherfucking tolerance
What about the vpd chart. I stay around 75 to 78 degree and the chart says humidity about bringing around 65-70 in veg. Is that ok?
Just kinda to fast to Absorb the informationPretty good video to brush up on though
Cltv
CLtv 🙂
Temp when lights off ?
Thankx
My grow room hovers between 45% and 55% RH, is that ok? Or do I need to buy a Dehumidifier for that extra 5%? I don't wanna spend 100 on a dehumidifier if I don't have to!
Good looking out man.
can u do a video on small tents with exhaust fans and how to perfect the humidity with the right dehumidifier?
Cltv
Thanks I'm a first time grower and this tip help me out , I just bought a humidifier and it on high…
Anyone use a dyson fan for temp. & humidity???
Cltv
4x4x8 tent four 3gal autoflower I'm at 6 and a half weeks early flower my temp is 72 and my humidity is 53 is that good or bad?
Appreciate the info.
Cltv
CLtv
CLtv!!!!
just started seeing a bit of powdery mildew can you give me the best dial back to get rid of that asap… i am using a really good garlicy spray that seem to make it better — it goes away and then kind of comes back
This is what I have extrapolated from grow videos: Let me know what anyone thinks, Thnx.
Auto Flower:
Early Veg (~62% Hum) 78 degrees
Late veg, ~52% Hum) 78 degrees
Early Flower (~42% Hum) 75 degrees
Late Flower (~32% Hum) 72 degrees
What about day and night temperature differences? I have heard it makes stems thicker and yields bigger? Should there be a 5 degree celsius difference, or is it a waste of energy to cool down?
I'm going through a extreme heat waves what should I do this for my plants The leaves are started to Taco and burn
CLtv
💯👍🏾
CLtv
😎👍Lekker.
Looking For some help please…
I have two plants in veg (3 weeks old) in a 3x3x6 tent with only an exhaust fan (190 cfl). Multiple floor fans, dehumidifier. LED lights (600watts) Weather in this area jumps around. Some days really humid, others really dry. I'm really worried about when they are put into flower. Usually the humidity stays within 50-68%, but lately it's been very humid outside, and my tent won't get any lower than 70%…. any suggestions on how to help the humidity stay at a solid 50-55%?
Crazy info thank you
Great vid