What is your biggest question about growing cannabis?

[Farmall]

Tags63 many books, articles and web pages on humidity that tout 65% as a good humidity for veg stage and 50% for flower. My summer humidity runs 50% with a new a/c system and winter around 38% and lower at times. All seem less important than light, temperatures and nutrients within the scope of my own experiences. You won’t want to seal the room as you will need adequate airflow thru the grow space to help plants thrive. Welcome to the forum

[dropinbiking]

Plants will add humidity, lights will lower humidity, see above. Probably not a major issue for you.

[Tags63]

Hey All!!

I'm new to the forum. Basically, I've been using cannabis for 45 years, been making my own concentrate & edibles for past 2 yrs. I am now going to grow my own indoors. I pretty much have everything covered but I do have 1 question about humidity. They say 40-55% is where you want to be at but is that written in stone?? I didn't start my project yet, just getting things together. But at the moment my grow closet is 20-25% humidity. Of course it's cool out here in NE US & probably will go up but even in the summer it never goes over 35% since I have a very good air filtration system in my place. I'm also assuming when I insulate & seal the closet's grow area with a reflective 1 inch x 4' x 8' panels & install the lighting, will the humidity increase?? Is humidity of higher levels very important for the growing process?? If it is, What can I do to increase the humidity?? Thanks, Paul Tags

[Farmall]

I agree, the ambient temperature of the basement is irrelevant if your tent is in the 70’s.

[dropinbiking]

You're fine. Tent temps are what you're worried about. Don't take them out of the tent for hours at a time.

[kronicking]

Yea those don't look bad for all the problems it sounds like they went through. I guess I could try and do a low humidity grow as I read that it seems with low humidity the plants are just going to uptake water/nutrients quicker to combat the low humidity so I think it should be decent as long as I flush every once in a while to get rid of excess salt. the only thing I am worried about is if the temperatures outside of tent being cold will have an adverse affect or even stall out my autoflowers if I have them in the tent at 71.6F-75.2F and the outside of the tent is 59F-62.3F and I pull them out to water/feed (temp drops to outside of tent temperatures instantly). I can't heat up the basement because it will become hot upstairs if I do so I was wondering if that will be okay?

[alltatup]

35% humidity don't bother my girls...

[Farmall]

In that same vein, humidity in my house and the outer building never got above 38 and at times hovered near 29%.

[dropinbiking]

Here's a canopy shot a week or two before harvest. Considering all the nutrient burn issues, light burn, wind stress, weeks at a time at temps below 15, I think the low humidity was the least of their worries. They still finished up okay, certainly not perfect, but like I said, lots I could have done better, humidity wasn't even on my mind, and I doubt humidity ever got above 40 for more than a few hours, certainly not for a day.

[dropinbiking]

Been growing all winter in humidity ranges between 22-45. Downstairs with a wood stove in deep cold winter = dry air no matter how you cut it, warm or cold, I'll take my pick of warm. I'll take dry warm air vs humid colder air. Unless humidity is consistently below 25 on a daily basis, I wouldn't be overly concerned with boosting humidity. A lot of the time you end up cooling the air, which is counter productive in the winter when every degree counts.

[kronicking]

Hi, I am looking to start growing and I have purchased tents cmh lights day/night fan controller etc. I am wondering what you guys do in winter if you live in a cold climate where the humidity inside is supposed to be below 40%. During winter outside usually stays around 0F or -10F according to this website and a couple others https://www.hvac.com/faq/recommended-humidity-level-home/ the humidity in your home during those temps is supposed to be no higher than 25% for -10F and 30% for 0f. I was wondering what suggestions you guys have? Is it okay to grow at those humidity levels because I have been reading about 40-60%. I don't know if it makes any difference but I have autoflowers.

[dropinbiking]

It's drying good. The flat ceiling white was more watery than the semi-gloss I was using on the shelf, which was good. The thick semi helped fill in and build up, shelf looks good. The closet just needed a few spots brushed in, and a quick 2 coats rolled on. Night and day difference. Yeah I've got a fan on in the closet, and another fan on in the room, things are drying up nicely. I imagine with the wood stove on tonight I'll be plenty fine to set things back up in the morning. Still un-sure if I should paint the floor with a quick coat of white.

[alltatup]

I would agree with you: if you can't smell it, it would seem ok to me.

[RagWeedDWC]

Throw a good fan on it and another to blow it out of the room, 24 hours should be fine, that's basically what I do to mine every year. I clean it up, make any mods I want and repaint it all flat white using a water based paint. Works great

[dropinbiking]

Stuffs not too bad actually. The primer had more spice to it forsure. This shelf is gonna be banging! Might do a green leaf on it somewhere.