Dry tent humidity compared to lung room

Rama777 · Jan 1, 2024

Yo! I’m getting fairly close to my first harvest. They won’t all be done at the same time so I got another tent just for dying. I’ll be using a 4” intake with a hepa filter, set to 1 and maybe a fan on the floor set to low, not facing the plants at all, and with the top cinch ports left open.

I dehumidify the lung room down to about 45% to keep the flowering tent in check. This is a bit low for drying.

My question is if I can expect the drying tent to have higher humidity from the moisture release of the harvested branches? If so, is it like 3% or higher or more like 10%?

If it’s on the low end, is it safe to have a small humidifier going in the tent to keep it closer to 55%?

Thanks farmers!

LoveGrowingIt · Jan 1, 2024

Rama777 said:
My question is if I can expect the drying tent to have higher humidity from the moisture release of the harvested branches? If so, is it like 3% or higher or more like 10%?

They do have moisture, but they release it slowly. It usually takes 7 to 10 days or even longer to dry. How fast it happens depends on the ambient heat and humidity. It's best for the buds to dry slowly.

Rama777 said:
If it’s on the low end, is it safe to have a small humidifier going in the tent to keep it closer to 55%?

I don't think so. I don't use one with my drying tent, but I did think about it. I adjust the exhause fan. Slow it down for a slower dry.

Rama777 · Jan 1, 2024

LoveGrowingIt said:
They do have moisture, but they release it slowly. It usually takes 7 to 10 days or even longer to dry. How fast it happens depends on the ambient heat and humidity. It's best for the buds to dry slowly.

I don't think so. I don't use one with my drying tent, but I did think about it. I adjust the exhause fan. Slow it down for a slower dry.

Cool thanks! Yeah a humidifier in the tent seems sketchy to me too.

But at the same time, 45% humidity seems too low. Maybe I’ll put a 7 gallon pot of moist soil on the floor if it ends up being under 50%. Does that sound safe to you?

Natep · Jan 2, 2024

I dry in my tent. I have to add humidity. However it is super dry in Southern California

climbit · Jan 2, 2024

LoveGrowingIt said:
They do have moisture, but they release it slowly. It usually takes 7 to 10 days or even longer to dry. How fast it happens depends on the ambient heat and humidity. It's best for the buds to dry slowly.

I don't think so. I don't use one with my drying tent, but I did think about it. I adjust the exhause fan. Slow it down for a slower dry.

So would a humidity level of 55-58% be ideal to allow for a slight increase due to the plants releasing moisture?

SchwiftyGrower · Jan 2, 2024

I dry in my tent. First day I’m at 60 degrees and the tent may hit 68% humidity on day one.

I just set my floor fans to minimum, but my exhaust is set to max.

I will continue to run this until I hit 62%, which is usually 24 hours later.

I will decrease my exhaust down to 1-3.

At that point it will slowly decrease to 60-60. At that point if it gets below 58% my humidifier will kick on. It will kick back off once humidity reaches 62%.

I will keep this process going try to stay as close to 60/60 as I can for 10-14 days!

Natep · Jan 2, 2024

climbit said:
So would a humidity level of 55-58% be ideal to allow for a slight increase due to the plants releasing moisture?

Try and keep it as close to 60degrees and 60% rh for 14 days.

climbit · Jan 2, 2024

Natep said:
Try and keep it as close to 60degrees and 60% rh for 14 days.

Thanks Nate!

Rama777 · Jan 2, 2024

I don’t think I’ll be able to hit 60 degrees much, but I can probably keep it between 65-69 degrees.

SchwiftyGrower · Jan 2, 2024

Rama777 said:
I don’t think I’ll be able to hit 60 degrees much, but I can probably keep it between 65-69 degrees.

Yeah it’s tough, but I’d try and get it as close as you can. We can’t hit every key point and our areas and environments play a huge part. Just try and get as close to you can within recommendations and work with what ya have!

I have a dedicated lung room with an AC unit that helps me get my goals. But running it comes at a cost

Rama777 · Jan 2, 2024

A worthwhile cost!

Rama777 · Jan 2, 2024

SchwiftyGrower said:
Yeah it’s tough, but I’d try and get it as close as you can. We can’t hit every key point and our areas and environments play a huge part. Just try and get as close to you can within recommendations and work with what ya have!

I have a dedicated lung room with an AC unit that helps me get my goals. But running it comes at a cost

Well actually I may be able to do pull it off. Don’t thermostats typically bottom out around 68 or so? You can set yours down to 60?

SchwiftyGrower · Jan 2, 2024

Rama777 said:
Well actually I may be able to do pull it off. Don’t thermostats typically bottom out around 68 or so? You can set yours down to 60?

I have a mobile AC unit that exhausts out a window. It’s bottom temps get to 61 and will get my lung room as cold as 56. Let me see if I can find you a link and I’ll edit the post

Edit
Can’t seem to find my exact one, guess they don’t sell it. But it’s basically this one
10,000 BTU Portable Air Conditioners, Portable AC With Remote for Room to 450 sq.ft 3 in 1 Air Conditioner With Dehumidification/Air Circulation/Timer And Window Kit https://a.co/d/1fMABTC

Rama777 · Jan 2, 2024

I just realized that my coolbots for my walk in-coolers (I’m a produce farmer..) aren’t being used during the winter. I’ll pop my window AC in which I think bottoms out at 68 and just use the coolbot! 60 degrees will be no problem after all!

So I’ll have a window AC, a humidifier, a dehumidifier and now probably a small heater to keep all my tents happy. My god, I am not helping on the global warming front

SchwiftyGrower · Jan 2, 2024

Rama777 said:
I just realized that my coolbots for my walk in-coolers (I’m a produce farmer..) aren’t being used during the winter. I’ll pop my window AC in which I think bottoms out at 68 and just use the coolbot! 60 degrees will be no problem after all!

So I’ll have a window AC, a humidifier, a dehumidifier and now probably a small heater to keep all my tents happy. My god, I am not helping on the global warming front

Hahaha I know the feeling, but it’s only a little bit throughout the process. It’s not like we are taking jets back and forth all day I’m going to get a solar panel on my roof to power my grow area for me

LoveGrowingIt · Jan 2, 2024

climbit said:
So would a humidity level of 55-58% be ideal to allow for a slight increase due to the plants releasing moisture?

I don't think the plants releasing moisture is a significant factor, unless there is a lot of plant material in a small space. I did a before and after weighing of the last buds I dried. The difference was 250 grams, or 8.9 ounces. So, slightly more than a cup of water was removed during the eight days of drying.

What I think is most important, is air flow around the buds and avoiding drying them too fast. Buds don't dry evenly. The inside dries slower than the outside. So, I adjust the exhaust fan speed to control the rate of drying. Slower is better.

Here's a picture of the tent I've used for the last few grows. It works better than it looks. It evolves a little each time I use it. I might add a pan of water at the bottom. I also have plans to improve the air circulation.

The CO2 monitor in front shows the temperature is 62º and the RH is 50%. Those numbers are very consistent in this room during the cool months.

Rama777 · Jan 2, 2024

LoveGrowingIt said:
I don't think the plants releasing moisture is a significant factor, unless there is a lot of plant material in a small space. I did a before and after weighing of the last buds I dried. The difference was 250 grams, or 8.9 ounces. So, slightly more than a cup of water was removed during the eight days of drying.

What I think is most important, is air flow around the buds and avoiding drying them too fast. Buds don't dry evenly. The inside dries slower than the outside. So, I adjust the exhaust fan speed to control the rate of drying. Slower is better.

Here's a picture of the tent I've used for the last few grows. It works better than it looks. It evolves a little each time I use it. I might add a pan of water at the bottom. I also have plans to improve the air circulation.

The CO2 monitor in front shows the temperature is 62º and the RH is 50%. Those numbers are very consistent in this room during the cool months.

I had that same tent but had to scrap it after the zipper failed within a month. Got a refund fortunately.

Do you have an exhaust hooked up to that tent? I don’t see one.

Rama777 · Jan 2, 2024

I ended up getting a 6’ tall tent for drying. Overkill but I figure it may get used for another flowering tent someday. Maybe sooner rather than later ;)

Natep · Jan 2, 2024

If you can not get it that cold leave the plant whole. That way it slows it down some.

ViolettaLiz · Jan 2, 2024

I have no idea, I'm just reading and maybe learning!

Dry tent humidity compared to lung room

Dry tent humidity compared to lung room

Rama777

LoveGrowingIt

Rama777

Natep

climbit

SchwiftyGrower

Natep

climbit

Rama777

SchwiftyGrower

Rama777

Rama777

SchwiftyGrower

Rama777

SchwiftyGrower

LoveGrowingIt

Rama777

Rama777

Natep

ViolettaLiz

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