Low Humidity Question - Issue?

J

JohnGotti

Active Member
Hey RIU,

My humidity has been a constant 20% since I've started my room. My apartment is usually very dry as well so clearly this is where it stems from.

I'm currenty at the end of my 1st week of flower and I'm a bit worried that witb the low humidity(20%), I'm going to run into issues as my colas develop. Should I introduce a humidifier?

Thanks!
 
BleedsGreen

BleedsGreen

Well-Known Member
I would get a humidifier, try to keep it at about 50%. How was your growth during veg? It seems like growth is slower for me when under 50% during veg, so I have a humidifier for that. Once I switch to flower, I usually don't need it, the humidity doesn't back away as quickly with lights out period.
Good luck and happy growing.
 
J

JohnGotti

Active Member
BleedsGreen said:
I would get a humidifier, try to keep it at about 50%. How was your growth during veg? It seems like growth is slower for me when under 50% during veg, so I have a humidifier for that. Once I switch to flower, I usually don't need it, the humidity doesn't back away as quickly with lights out period.
Good luck and happy growing.
Click to expand...
Thanks BG. That's what I figured. To be honest, Veg was definitely affected as growth was slower than expected and chalked it up to how dry the room is. Luckily I have a humidifier and will throw that bad boy in the room and see if it helps.
 
GrowinDad

GrowinDad

Well-Known Member
If you have a way to just get a trickle of outdoor air going in it may help. It brought mine up about 15-20% during lights on and has helped temps as well. I have a little door that leads to a storage area with rafter vents. I makeshift a little channel from it that goes into my tent. So fresh air and more CO2 can't hurt either.
 
J

JohnGotti

Active Member
GrowinDad said:
If you have a way to just get a trickle of outdoor air going in it may help. It brought mine up about 15-20% during lights on and has helped temps as well. I have a little door that leads to a storage area with rafter vents. I makeshift a little channel from it that goes into my tent. So fresh air and more CO2 can't hurt either.
Click to expand...
I have plenty of fresh air supplementing the room. Unfortunately, I have a really dry place and ot affects me as well, hence having a humidifier on hand. Hopefully when I get my tent set up, I can have more control of the humidity. Right now this is a home closet grow, albeit a big closet, but still a very dry place. I do plan on picking up a CO2 set up but that will be once i get my tent set up.
 
B

bseeds

Well-Known Member
ya humidifer is the way to go even if you have to by those little ones that hold about 1gal of water when filled with cold water helps with heat also
 
MYOB

MYOB

Well-Known Member
I have been battling low humidity. The dry, winter air coupled with the heater and exhaust make for a room that is usually around 20-30% RH. I did the whole wet towel thing, humidifiers, cups of water, buckets of wet perlite, etc. Finally I just said fuck it and let them go. They have been growing fine at 27% ever since. In fact, I think all the other shit was worse for the plants than low humidity. The in-and-out, the extra electrical, the moving the pots, water spills, refilling. All of that wasn't worth the extra few percent.

What helped most though, like going from 30%-60% was turning off my exhaust fan (and using a small cool mist humidifier) Unfortunately this is not practical long term.

From what I understand, low humidity is a much better problem to have than excessively high humidity. Seedlings/cuttings are a different story. I use a dome for seedlings and take them out when they have a couple sets of fan leaves.
 
hotrodharley

hotrodharley

Well-Known Member
Be careful with humidifiers during flowering. Denser nug plants develop bud rot easier but all can suffer from it. Sealed rooms can be a no no with humidity.
 
hiitsbob

hiitsbob

Well-Known Member
i would not worry to much about it i am at day 18 with humidity around 25%. sure it might slow growth a bit.
sure a humidifier will help some it raises me about 8-10%
i would suggest that but do not worry about getting it to high since you are flowering.
2nd pic is just with flash color is normal.
View attachment 2530991View attachment 2530992
 
AimAim

AimAim

Well-Known Member
MYOB said:
I have been battling low humidity. The dry, winter air coupled with the heater and exhaust make for a room that is usually around 20-30% RH. I did the whole wet towel thing, humidifiers, cups of water, buckets of wet perlite, etc. Finally I just said fuck it and let them go. They have been growing fine at 27% ever since. In fact, I think all the other shit was worse for the plants than low humidity. The in-and-out, the extra electrical, the moving the pots, water spills, refilling. All of that wasn't worth the extra few percent.

What helped most though, like going from 30%-60% was turning off my exhaust fan (and using a small cool mist humidifier) Unfortunately this is not practical long term.

From what I understand, low humidity is a much better problem to have than excessively high humidity. Seedlings/cuttings are a different story. I use a dome for seedlings and take them out when they have a couple sets of fan leaves.
Click to expand...
This has been my same exact experience. I fought it but could never get humidity above 30%. Also said fuck it. Plants are doing great. I only have 4 plants in a 5'X5'. Until yesterday they were only in 6" pots. I moved them to 5 gal yesterday and the humidity is 8-9 points higher due to the increased evaporative surface area in the room.

Anyway I think humidity is really important that first week from sprout. When they have almost no roots you can dry the tops out with hot dry air. After that as they get some roots the RH has a lesser impact. All just my opinion.
 
jojaxx

jojaxx

Well-Known Member
Same here !Faught with humidity being low & worrying plants would start to have problems if I couldn't get it to rise but after a few grows I gave up....actually when I 1st started growing I never checked humidity, ph, heat or anything & did ok...lol
 
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