[funkdoctorspock]

Hi folks,

Last time i dried in 4-5 days.
This time i want to do it slower.

I think i will hang whole plants after a v minor trim of larger leaves.

Anyone else done the 6" carbon extractor technique in a 4x2?

I wonder if it will create enough air turbulence to keep evil out?

Not keen on running a fan as it just dries too fast!!

My lung room is about 50% humidity in the dayright now!

Thanks

 

[LoveGrowingIt]

We use a 2x2x3 tent with a circulation fan inside and an exhaust fan at the top running at a very slow speed. We usually wet trim and dry the buds on racks. We don't use a filter, but we're thinking about adding one. Someday soon we plan to invent the next version of our drying tent. The one we have is working well, so it hasn't been a priority. I've started to get sick from breathing the exhaust, however, so we need to do something about it.

 

[Smokey_LaFleur]

Whole plant is the best way to slow your dry, imo. I have a 4x4, 6" exhaust running on low along with a circulation fan also on low setting. Keep your tent as close to 60 rh and 60° as possible. Usually around 10-14 days they're ready for jar/cure.

 

[funkdoctorspock]

Whole plant is the best way to slow your dry, imo. I have a 4x4, 6" exhaust running on low along with a circulation fan also on low setting. Keep your tent as close to 60 rh and 60° as possible. Usually around 10-14 days they're ready for jar/cure.

I might have to run my humidifier in my lung room to hit 60%!
Seems a little risky but i need the slow dry like you say.
i'll use my ac infinity circulation fan on level 1 at the very base.
tent will be busy so can't take any risk.
Good call

 

[Smokey_LaFleur]

You'll be fine, just keep some air moving around the tent. Down low is where I keep my circ fan for dry. I also find it easier to humidify the tent itself, rather than the lung room. .

 

[funkdoctorspock]

You'll be fine, just keep some air moving around the tent. Down low is where I keep my circ fan for dry. I also find it easier to humidify the tent itself, rather than the lung room. .

I dont think i would run a hum in my drying tent. Spooks me

 

[Smokey_LaFleur]

Do what you think is good for you. Hasn't been a problem for me yet.

 

[LoveGrowingIt]

As I read this, I pondered how it can be difficult to get to 60º F and 60% RH, so I began to wonder if VPD could be applied to drying. So far, I haven't thought of a reason why it wouldn't work. At least it seems like it's worth further thought and/or testing. VPD does, after all, describe the rate of diffusion of moisture from leaves to the atmosphere--and that's the essence of drying.

A temperature of 60º F and a RH of 60% resolve to 0.71 kPa.* That kPa value can be used to find other temperature and RH combinations that yield the same kPa value. These example º F and RH combinations all resolve to 0.71 kPa (or close to it): 55,53; 65,67; 70,72 **

So, if humidity is constant or difficult to adjust, then set a controller to adjust the temperature so that the VPD = 0.71, or, likewise, adjust humidity when the temperature is constant. A smart controller could also adjust both, of course.

* I disregarded leaf temperature because it most likely would be the same as the ambient temperature due to the lack of radiant heat from a light.
** Here's a VPD calculator for trying other combinations.

 

[funkdoctorspock]

As I read this, I pondered how it can be difficult to get to 60º F and 60% RH, so I began to wonder if VPD could be applied to drying. So far, I haven't thought of a reason why it wouldn't work. At least it seems like it's worth further thought and/or testing. VPD does, after all, describe the rate of diffusion of moisture from leaves to the atmosphere--and that's the essence of drying.

A temperature of 60º F and a RH of 60% resolve to 0.71 kPa.* That kPa value can be used to find other temperature and RH combinations that yield the same kPa value. These example º F and RH combinations all resolve to 0.71 kPa (or close to it): 55,53; 65,67; 70,72 **

So, if humidity is constant or difficult to adjust, then set a controller to adjust the temperature so that the VPD = 0.71, or, likewise, adjust humidity when the temperature is constant. A smart controller could also adjust both, of course.

* I disregarded leaf temperature because it most likely would be the same as the ambient temperature due to the lack of radiant heat from a light.
** Here's a VPD calculator for trying other combinations.

Wow. Those are tough stats. No way i can achieve 15 degrees.
I might struggle to get below 20c

 

[amneziaHaze]

As I read this, I pondered how it can be difficult to get to 60º F and 60% RH, so I began to wonder if VPD could be applied to drying. So far, I haven't thought of a reason why it wouldn't work. At least it seems like it's worth further thought and/or testing. VPD does, after all, describe the rate of diffusion of moisture from leaves to the atmosphere--and that's the essence of drying.

A temperature of 60º F and a RH of 60% resolve to 0.71 kPa.* That kPa value can be used to find other temperature and RH combinations that yield the same kPa value. These example º F and RH combinations all resolve to 0.71 kPa (or close to it): 55,53; 65,67; 70,72 **

So, if humidity is constant or difficult to adjust, then set a controller to adjust the temperature so that the VPD = 0.71, or, likewise, adjust humidity when the temperature is constant. A smart controller could also adjust both, of course.

* I disregarded leaf temperature because it most likely would be the same as the ambient temperature due to the lack of radiant heat from a light.
** Here's a VPD calculator for trying other combinations.

Yea but end of day buds cant be dryer than the room they are stored in.there is no point in having 70 buds will stay at 70.

I Keep mine in a drying fridge they are at 65% humidity for the last 3months i think and they are still smelling like.the day i cut them and sticky too

What i wanted to say as long as there is air movement in there there is a low chance of mold.

 

[funkdoctorspock]

Yea but end of day buds cant be dryer than the room they are stored in.there is no point in having 70 buds will stay at 70.

I Keep mine in a drying fridge they are at 65% humidity for the last 3months i think and they are still smelling like.the day i cut them and sticky too

What i wanted to say as long as there is air movement in there there is a low chance of mold.

Absolutely. Fingers crossed this heatwave dissipates a little

 

[funkdoctorspock]

Yea but end of day buds cant be dryer than the room they are stored in.there is no point in having 70 buds will stay at 70.

I Keep mine in a drying fridge they are at 65% humidity for the last 3months i think and they are still smelling like.the day i cut them and sticky too

What i wanted to say as long as there is air movement in there there is a low chance of mold.

Any links to this drying fridge? Sounds like domestic luxury

 

[Grownsince95]

As I read this, I pondered how it can be difficult to get to 60º F and 60% RH, so I began to wonder if VPD could be applied to drying. So far, I haven't thought of a reason why it wouldn't work. At least it seems like it's worth further thought and/or testing. VPD does, after all, describe the rate of diffusion of moisture from leaves to the atmosphere--and that's the essence of drying.

A temperature of 60º F and a RH of 60% resolve to 0.71 kPa.* That kPa value can be used to find other temperature and RH combinations that yield the same kPa value. These example º F and RH combinations all resolve to 0.71 kPa (or close to it): 55,53; 65,67; 70,72 **

So, if humidity is constant or difficult to adjust, then set a controller to adjust the temperature so that the VPD = 0.71, or, likewise, adjust humidity when the temperature is constant. A smart controller could also adjust both, of course.

* I disregarded leaf temperature because it most likely would be the same as the ambient temperature due to the lack of radiant heat from a light.
** Here's a VPD calculator for trying other combinations.

I've had this thought before and my drying tent is stuck in a closet that stays 74° at 50% or less rh. To achieve a .7 kpa I would have to have 70% rh. Not even gonna try that once with so much on the line! But flowering vpd at 1.2 kpa the rh drops to 50% which is exactly where my closet is at. So I set my controller to 58% with a 2% swing which is around 1. kpa.

Long story short I don't think veg level VPD is enough evaporation for the initial drying stage at higher temperatures where the rh approaches mold levels but the idea of using it to understand the pull of evaporation on the plant is very useful.

 

[Week4Bytch]

As I read this, I pondered how it can be difficult to get to 60º F and 60% RH, so I began to wonder if VPD could be applied to drying. So far, I haven't thought of a reason why it wouldn't work. At least it seems like it's worth further thought and/or testing. VPD does, after all, describe the rate of diffusion of moisture from leaves to the atmosphere--and that's the essence of drying.

A temperature of 60º F and a RH of 60% resolve to 0.71 kPa.* That kPa value can be used to find other temperature and RH combinations that yield the same kPa value. These example º F and RH combinations all resolve to 0.71 kPa (or close to it): 55,53; 65,67; 70,72 **

So, if humidity is constant or difficult to adjust, then set a controller to adjust the temperature so that the VPD = 0.71, or, likewise, adjust humidity when the temperature is constant. A smart controller could also adjust both, of course.

* I disregarded leaf temperature because it most likely would be the same as the ambient temperature due to the lack of radiant heat from a light.
** Here's a VPD calculator for trying other combinations.

I was gonna say..but you said it better, (from the top of my head) I was closer to the VPD of .8, I happen to dry lower than 60F so a 60% humidity will and does increase the drying time. I think the sweet spot is between 10-15 days? Worth looking into. I heard an old timer recommend 56- 58% humidity. It's a challenge to dial those in (at home) for us normal folks. But I believe your spot on with the VPD during the DRY.