THE TRAINWRECK. Brought to you by thcfarrmer…..

[PlumberSoCal2]

 

[closettrapper217]

After one night of using a tent. Damn them things are way more air tight than my wooden box lol same airflow setting I used to run on the box woke up to 99% humidity hahaha guess I gotta turn that exhaust fan up lol also opened up one of the holes on the bottom to allow some fresh air to pull through the bottom than get sucked out the top. That’s how the wooden box worked but I guess it pulled a lot more air through the seems between the 2x4s and stuff. Anyway. No bud rot or anything surprisingly lol

I’ll be getting some ducting and dialing in the airflow. Can’t decide if I should pipe the exhaust from the flower tent into the veg tent or run completely separate systems. I run the dreaded woodstove on the other side of the basement during the winter and it dries the air out so bad that I think if I pipe the air from the flower tent that should be higher humidity than the basement. Idk I’ll do some tinkering. I know easiest thing that I wouldn’t even need to buy anything new for is run the six inch exhaust out of the flower tent and then straight into the veg tent and use my four inch exhaust fan to exhaust the veg tent but only have it come on when the humidity or temp gets too high. Clearly that box pulls enough fresh air to not worry about it haha so that will be what I try first and go from there.

 

[cpurola]

One of these things is not like the other .
View attachment 2542944
I was freaking done. Lights out door shut. Went back in to move sensor cup as we are 3 inches up now.
Would have been 10 or so hours until the next look.

This is a test, right? (g)
The blue cup on the pot in the back? Did I get it right? LOL

 

[BearWater]

After one night of using a tent. Damn them things are way more air tight than my wooden box lol same airflow setting I used to run on the box woke up to 99% humidity hahaha guess I gotta turn that exhaust fan up lol also opened up one of the holes on the bottom to allow some fresh air to pull through the bottom than get sucked out the top. That’s how the wooden box worked but I guess it pulled a lot more air through the seems between the 2x4s and stuff. Anyway. No bud rot or anything surprisingly lol

I’ll be getting some ducting and dialing in the airflow. Can’t decide if I should pipe the exhaust from the flower tent into the veg tent or run completely separate systems. I run the dreaded woodstove on the other side of the basement during the winter and it dries the air out so bad that I think if I pipe the air from the flower tent that should be higher humidity than the basement. Idk I’ll do some tinkering. I know easiest thing that I wouldn’t even need to buy anything new for is run the six inch exhaust out of the flower tent and then straight into the veg tent and use my four inch exhaust fan to exhaust the veg tent but only have it come on when the humidity or temp gets too high. Clearly that box pulls enough fresh air to not worry about it haha so that will be what I try first and go from there.

im trying to make a closed loop system out of three chambers with the veg room having an exhaust and inlet from the outside to in. But i have different heating style and i totally different climate.

Check out Mikedins setup (i know you’ve seen it before) but i think hes similar climate and runs multiple tents in a basement setting! And hes got like 3 or 14 wood stoves throughout his house for heat!

im still here for you if you want to bounce stuff back and fourth! : )

 

[BearWater]

After one night of using a tent. Damn them things are way more air tight than my wooden box lol same airflow setting I used to run on the box woke up to 99% humidity hahaha guess I gotta turn that exhaust fan up lol also opened up one of the holes on the bottom to allow some fresh air to pull through the bottom than get sucked out the top. That’s how the wooden box worked but I guess it pulled a lot more air through the seems between the 2x4s and stuff. Anyway. No bud rot or anything surprisingly lol

I’ll be getting some ducting and dialing in the airflow. Can’t decide if I should pipe the exhaust from the flower tent into the veg tent or run completely separate systems. I run the dreaded woodstove on the other side of the basement during the winter and it dries the air out so bad that I think if I pipe the air from the flower tent that should be higher humidity than the basement. Idk I’ll do some tinkering. I know easiest thing that I wouldn’t even need to buy anything new for is run the six inch exhaust out of the flower tent and then straight into the veg tent and use my four inch exhaust fan to exhaust the veg tent but only have it come on when the humidity or temp gets too high. Clearly that box pulls enough fresh air to not worry about it haha so that will be what I try first and go from there.

Your diy box could be the perfect drying cabinet! Im high so if i missed your plans with it from your boat my apologies lol!

 

[closettrapper217]

This thing better hurry up and finish. Water temps are getting low lol

 

[closettrapper217]

im trying to make a closed loop system out of three chambers with the veg room having an exhaust and inlet from the outside to in. But i have different heating style and i totally different climate.

Check out Mikedins setup (i know you’ve seen it before) but i think hes similar climate and runs multiple tents in a basement setting! And hes got like 3 or 14 wood stoves throughout his house for heat!

im still here for you if you want to bounce stuff back and fourth! : )

Yeah but he rich LMAO

But honestly, that is exactly my plan after I get this dialed in order another 4 x 4 that way I have like an extra one to dry in or if I really want I can flower in and use one for a veg use the wooden box for a back up haha opportunities are endless. Lol

 

[JIMKSI64]

Now is this a nice looking bear claw or is it the food distortion effect of this doobie.

 

[closettrapper217]

Now is this a nice looking bear claw or is it the food distortion effect of this doobie.
View attachment 2542989

Nope. Looks fire. Wait but maybe that could be from my doo…..idfk anymore man

 

[JIMKSI64]

Nope. Looks fire. Wait but maybe that could be from my doo…..idfk anymore man

We will need someone sober to judge.
GLWT here.

 

[BearWater]

Yeah but he rich LMAO

But honestly, that is exactly my plan after I get this dialed in order another 4 x 4 that way I have like an extra one to dry in or if I really want I can flower in and use one for a veg use the wooden box for a back up haha opportunities are endless. Lol

We are as wealthy as we choose too be my brother

- Confucius (probably)


I hear you : ) dude I’ve been building my shed for the last almost two years! I just got more lumber for it to be closer to finishing it! Hahahah! but your right with the possibilities being endless! once you have the fans and stuff you can configure things all sorts of ways!

 

[ChairmanFester]

We are as wealthy as we choose too be my brother

- Confucius (probably)


I hear you : ) dude I’ve been building my shed for the last almost two years! I just got more lumber for it to be closer to finishing it! Hahahah! but your right with the possibilities being endless! once you have the fans and stuff you can configure things all sorts of ways!

And my operations bunker... clean out hoarder shit, organize shit 70 times, replace the wall, paint the wall, remodel bathroom, coherently plan the yard lol... fuck it never ends the DIY to get shit done. I just had to brace the shelves on the vinyl listening bar for the weight too!
I wish I understood all that airflow math in the drying post (that one was serious), but lots of it does make sense.
But sometimes with ideas lol... I should be glad Carly is doing good I bet she is 10-12 days???? from chop?

 

[BearWater]

And my operations bunker... clean out hoarder shit, organize shit 70 times, replace the wall, paint the wall, remodel bathroom, coherently plan the yard lol... fuck it never ends the DIY to get shit done. I just had to brace the shelves on the vinyl listening bar for the weight too!
I wish I understood all that airflow math in the drying post (that one was serious), but lots of it does make sense.
But sometimes with ideas lol... I should be glad Carly is doing good I bet she is 10-12 days???? from chop?

The day it ends is the day i die! Forever fiddler! you should here the shit my wife talks to me about it! HAHAHA! Shes a saint! basically Dorthy Mantooth incarnated

Hold up! What post with airflow math? Would you mind pointing me in that direction? : ) Or are you stroking my super genius mathematical capabilities from one of my posts?

dude those are the hardest 12 days! I’ve really yet to achieve that fully finished herb, i always take it early because im needing the herb.

 

[ChairmanFester]

Fuck. You know sometimes I ask chat possibly stupid and overly expectation-laden things... and the fucking thing gives me a GOOD answer, or a good seed of one. Check this out...
mathematical model for cannabis drying (so you can predict drying time, avoid mold, and not roast the terps). I’ll show the key equations, explain each parameter, give recommended “practical optimum” ranges, then run a worked numeric example step-by-step.

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1) Definitions & conventions​

• Use wet-basis moisture content MwM_wMw: fraction of total mass that is water (so 75% wet-basis = 0.75).
• Temperature TTT in °C.
• Relative humidity RHRHRH in fraction (50% → 0.50).
• Air velocity vvv in m/s (near the buds).
• Equilibrium moisture content (wet-basis) at given T,RHT,RHT,RH: Meq(T,RH)M_{eq}(T,RH)Meq(T,RH). (This is the moisture the plant will approach if held at those conditions indefinitely.)
• Instantaneous moisture content Mw(t)M_w(t)Mw(t).

---

2) Core drying model (Newton / lumped mass)​

A simple, robust model that matches many drying-room observations is the exponential (first-order) drying model:

dMwdt=−k(Mw(t)−Meq)\frac{dM_w}{dt} = -k \bigl(M_w(t) - M_{eq}\bigr)dtdMw=−k(Mw(t)−Meq)
Solution:

Mw(t)=Meq+(Mw,0−Meq)e−ktM_w(t) = M_{eq} + \bigl(M_{w,0} - M_{eq}\bigr)e^{-k t}Mw(t)=Meq+(Mw,0−Meq)e−kt
Therefore the time to reach a target moisture Mw,targetM_{w,\text{target}}Mw,target:

t=−1kln⁡ ⁣(Mw,target−MeqMw,0−Meq)t = -\frac{1}{k}\ln\!\left(\frac{M_{w,\text{target}} - M_{eq}}{M_{w,0} - M_{eq}}\right)t=−k1ln(Mw,0−MeqMw,target−Meq)
Important constraint: drying below MeqM_{eq}Meq is impossible without changing RHRHRH or TTT (i.e. change environmental conditions); numerator/denominator must be positive.

---

3) Model for the drying constant kkk​

kkk bundles convective mass transfer, bud geometry, and temperature dependence. A practical semi-empirical form:

k=k0⋅vα⋅e−EaR(T+273.15)k = k_0 \cdot v^{\alpha}\cdot e^{-\frac{E_a}{R(T+273.15)}}k=k0⋅vα⋅e−R(T+273.15)Ea
Where:

• k0k_0k0 — empirical constant depending on bud packing and scale (units: 1/day).
• α\alphaα — air velocity exponent (≈0.5–1.0).
• EaE_aEa — activation energy for mass transfer (J/mol), RRR gas constant 8.314 J/mol·K.
  You can also use a simpler engineering rule: k∝vk \propto vk∝v (doubling airflow roughly doubles k) and kkk increases moderately with temperature.

Typical practical values (ballpark, adjust by experiment):

• k0k_0k0 ≈ 0.2–1.0 day⁻¹ (low for still air, high for forced flow racks).
• α\alphaα ≈ 0.7.
• For gentle drying setups use kkk in range 0.2–0.8 day⁻¹.

---

4) Equilibrium moisture Meq(RH,T)M_{eq}(RH,T)Meq(RH,T)​

Plant EMC is material-specific. For rough guidance (cannabis/plant matter):

• At RH = 60% → MeqM_{eq}Meq ≈ 0.14–0.16 (14–16% wet-basis).
• At RH = 50% → MeqM_{eq}Meq ≈ 0.11–0.13.
• At RH = 40% → MeqM_{eq}Meq ≈ 0.08–0.10.

(If you need more precision, use a sorption isotherm model — GAB or empirical lab data — but the ranges above are practical.)

---

5) Practical recommendations (the “ideal zone”)​

• Target drying temperature TTT: 18–21 °C (lower preserves terpenes; higher speeds drying but vaporizes volatiles).
• Target RH during drying: 45% ±5% if you want to reach ~10–12% final moisture; drop RH to ~40% to reach drier bud faster.
• Air velocity near buds: 0.2–0.6 m/s (gentle steady flow; avoid blasting which case-hardens exterior).
• Final target moisture (wet-basis): 10–12% is common for cured, smoke-stable buds.
• Avoid temperature > 24 °C during initial drying (terpene loss, bacterial growth risk).
• Spacing/hanging: single layer, good crossflow, not touching.

---

6) Worked example — compute drying time step by step​

Scenario: fresh harvest Mw,0=75%M_{w,0}=75\%Mw,0=75% (0.75), want Mw,target=11%M_{w,\text{target}}=11\%Mw,target=11% (0.11). Conditions: T=20∘T=20^\circT=20∘C, RH=40%RH=40\%RH=40% → assume Meq=9%M_{eq}=9\%Meq=9% (0.09). Assume a gentle forced-air setup giving k=0.5 day−1k=0.5\ \text{day}^{-1}k=0.5 day−1.


Equation:

t=−1kln⁡ ⁣(Mw,target−MeqMw,0−Meq)t = -\frac{1}{k}\ln\!\left(\frac{M_{w,\text{target}} - M_{eq}}{M_{w,0} - M_{eq}}\right)t=−k1ln(Mw,0−MeqMw,target−Meq)
Plug numbers (showing digits):

1. Mw,0−Meq=0.75−0.09=0.66.M_{w,0} - M_{eq} = 0.75 - 0.09 = 0.66.Mw,0−Meq=0.75−0.09=0.66.
2. Mw,target−Meq=0.11−0.09=0.02.M_{w,\text{target}} - M_{eq} = 0.11 - 0.09 = 0.02.Mw,target−Meq=0.11−0.09=0.02.
3. Ratio = 0.02/0.66=0.03030303…0.02 / 0.66 = 0.03030303\ldots0.02/0.66=0.03030303…
4. Natural log: ln⁡(0.03030303)=−3.493\ln(0.03030303) = -3.493ln(0.03030303)=−3.493 (rounded).
5. t=−10.5×(−3.493)=2×3.493=6.986 days.t = -\frac{1}{0.5}\times(-3.493) = 2 \times 3.493 = 6.986\ \text{days}.t=−0.51×(−3.493)=2×3.493=6.986 days.

So predicted drying time ≈ 7.0 days under those settings. (If you increase airflow so k=1.0 day−1k=1.0\ \text{day}^{-1}k=1.0 day−1, time halves ≈ 3.5 days.)

---

7) Important practical caveats & quality tradeoffs​

• Mold risk: if RH is too high early on (e.g., >65%) and drying is slow, mold risk skyrockets. Quickly reduce RH or increase airflow in first 48–72h.
• Case hardening: too high airflow or very low RH at the start desiccates the outer surface and traps moisture inside — slow the dry or raise RH temporarily.
• Terpene loss: higher T and faster drying reduce terpene retention and harshen smoke. Trade-off speed vs quality.
• Equilibrium rule: you cannot dry below MeqM_{eq}Meq without changing environment. If your target is lower than computed MeqM_{eq}Meq, lower RH or raise temperature (with terpene-loss risk).
• Heterogeneity: dense cola will dry slower than popcorn buds — model assumes a lumped average; monitor inner stem moisture if possible.

---

8) Quick tuning checklist (for the lab/closet operator)​

1. Set T = 18–21°C.
2. Set RH = 40–50% depending on target dryness. 40% → faster/drier; 50% → gentler.
3. Aim for gentle crossflow 0.2–0.6 m/s.
4. Measure M_w daily (or weigh a sample) and check for condensation or soft spots.
5. If mold risk, bump airflow and drop RH; if case hardening, raise RH a few points and slow airflow.
   
   
   
   Even if it's values are stupid (haven't checked fully) probably the math is solid, it's usually spot on with shit like ballistic calculations and chemistry as long as it's devoid of irrelevant details.

THIS ONE

Dear @ST.Sweeper please note the preceding post. This is how we get down on the Clown Train. BAZINGA! SCIENCEY!View attachment 2542904

accompanied by this one


Perhaps I fuck around and info is getting lost in the jokes...

 

[PlumberSoCal2]

We are as wealthy as we choose too be my brother

- Confucius (probably)


I hear you : ) dude I’ve been building my shed for the last almost two years! I just got more lumber for it to be closer to finishing it! Hahahah! but your right with the possibilities being endless! once you have the fans and stuff you can configure things all sorts of ways!

I plan on building a 7.5 x 15' greenhouse out of a pallet floor frame and 3/4" PVC pipe and fittings. I still have a few projects first but hoping to start in a few weeks. I'll do a diary on it. I've built another 7 x 9' a dozen years ago but today it has a tree leaning into it. I need to take it down and take the tree down, a winter project. I need the new one to flower in and get this stuff on a cycle of production

 

[closettrapper217]

We are as wealthy as we choose too be my brother

- Confucius (probably)


I hear you : ) dude I’ve been building my shed for the last almost two years! I just got more lumber for it to be closer to finishing it! Hahahah! but your right with the possibilities being endless! once you have the fans and stuff you can configure things all sorts of ways!

And then by the time you get done you’ll be ready to upgrade because the shit you didnt know at the beginning until infinity lmao

 

[closettrapper217]

THIS ONE


accompanied by this one


Perhaps I fuck around and info is getting lost in the jokes...

That doesn’t help at all lol how does that translate to drying weed haha

Back to the measurement problem.

 

[closettrapper217]

Fresh unit. If I would of known all I had to do was burn that thing down for heat and Bluetooth stereo I would of done it years ago LMAO

 

[Ninjadogma]

With my needs and being my wife's caregiver and I help out a couple who battle cancer and have no room to grow I could probably have no problems with a med rec of 99 plants. I'll renew every year. Take the edge off the fear of getting harassed and possibly losing strains. I think I'll frame it in the greenhouse

Ha! My renewal is coming up at the beginning of December so I'll probably take care of that in the next couple weeks. I figure I'm going to just mention I'm using more than the legal threshold for recreational and if any changes might be needed on my rec to be compliant.

Again, I have a bigger municipal issue here. The community passed their own ordinance prohibiting all outdoor growing but they wrote in a provision allowing it if you have a secured greenhouse.

And a side note idea my wife came up with, she said since I enjoy growing so much why don't I start a specialty gardening service where I come onto your property and take care of your legal weed plants for you.

 

[cpurola]

Yes but.
The little tiny autos in my grow even adjusting for 12-12 did not come close to the DLI for my photos. It will basically be 2 strains in the same tent with different light requirements. The auto will not care about the schedule it will just care about the strength and amount.
Nothing that's says no don't do it just another thing to take into consideration. I have a panel with flaps and extra lights for situations like this in fact if you look. At my last grow diary here I had plants in with 40% different light energy at the same time.

I see that. So, if I have a tent, let's say, 4 by 8, and it had 2 different sets of lights (4 x 4), it would work. Except where the lights would overlap in the center near the plants.
Would the same temp. and humidity be ok for both?